Towards an understanding of astronomical silicate dust based on mineralogy, meteoritics and infrared spectroscopy
Lead Research Organisation:
Cardiff University
Department Name: School of Physics and Astronomy
Abstract
Tiny dust grains exist throughout the Universe: from the most distant galaxies, to our own Solar System. These grains cause galaxies to shine at infrared wavelengths. Much of the space dust is made of silicates, with a similar composition to rocks, soil and sand on the Earth and to meteorites which are rocks which fall to Earth from space. Mineralogists and meteoriticists study silicate rocks and meteoritic silicates in great detail, but this knowledge is not often used to interpret astronomical data. I am an astrophysicist who tries to understand dusty regions of space, galaxies, exploding stars, newly-forming stars and comets by comparing data from telescopes with laboratory data; I apply the results to computational models to interpret the physics. Where there is insufficient laboratory data, I work with mineralogists, meteoriticists, chemists and physicists to obtain new data. This project will underpin the interpretation of infrared spectra obtained with the James Webb Space Telescope, and older under-interpreted Spitzer and ISO-telescope data. It will also provide an archive of laboratory data for physical models of the passage of light through dusty space and help other astrophysicists to know the composition and physics of astronomical silicate dust.
Organisations
- Cardiff University (Fellow, Lead Research Organisation)
- European Southern Observatory (ESO) (Collaboration)
- National Aeronautics and Space Administration (NASA) (Collaboration)
- UNIVERSITY OF NOTTINGHAM (Collaboration)
- KEELE UNIVERSITY (Collaboration)
- Physical Research Laboratory (Collaboration)
- Washington University in St. Louis (Collaboration)
- University of Minnesota (Collaboration)
- Arizona State University (Collaboration)
- Louisiana State University (Collaboration)
- University of Vienna (Collaboration)
- Science and Technologies Facilities Council (STFC) (Collaboration)
- University of Central Lancashire (Collaboration)
People |
ORCID iD |
| Janet Bowey (Principal Investigator / Fellow) |
Publications
Bowey J
(2021)
Dust changes in Sakurai's Object: new PAHs and SiC with coagulation of submicron-sized silicate dust into 10 µm-sized melilite grains
in Monthly Notices of the Royal Astronomical Society
Bowey J
(2022)
Sakurai's Object revisited: new laboratory data for carbonates and melilites suggest the carrier of 6.9- µ m excess absorption is a carbonate
in Monthly Notices of the Royal Astronomical Society
Bowey J
(2020)
Infrared spectra of pyroxenes (crystalline chain silicates) at room temperature
in Monthly Notices of the Royal Astronomical Society
Kamp I
(2021)
The formation of planetary systems with SPICA
in Publications of the Astronomical Society of Australia
| Description | 2021 Roadmap for Astronomy Research White Paper: What is the chemical and mineralogical composition of astronomical dust? |
| Geographic Reach | National |
| Policy Influence Type | Contribution to a national consultation/review |
| URL | https://www.ukri.org/publications/stfc-astronomy-advisory-roadmap-2022/ |
| Description | PRobe far-Infrared Mission for Astrophysics (PRIMA)- early stage community input science cases |
| Geographic Reach | Multiple continents/international |
| Policy Influence Type | Contribution to a national consultation/review |
| Title | Infrared spectra of pyroxenes (crystalline chain silicates) at room temperature |
| Description | PYROXENE SPECTRA from Bowey, J. E., Hofmeister, A., Keppel, E. 2020 MNRAS, 497, 3658 Infrared Spectra of Pyroxenes (Crystalline Chain Silicates) at Room Temperature https://doi.org/10.1093/mnras/staa2227 We present quantitative room-temperature spectra of 17 Mg-, Fe-, and Ca-bearing ortho- and clinopyroxenes, and a Ca-pyroxenoid in order to discern trends indicative of crystal structure and a wide range of composition. Data are produced using a diamond anvil cell: our band strengths are up to six times higher than those measured in KBr or polyethylene dispersions, which include variations in path length (from grain size) and surface reflections that are not addressed in data processing. This is the README.txt file in the upload. Data doi is : 10.5281/zenodo.5564539 PYROXENE SPECTRA from Bowey, J. E., Hofmeister, A., Keppel, E. 2020 MNRAS, 497, 3658 Infrared Spectra of Pyroxenes (Crystalline Chain Silicates) at Room Temperature https://doi.org/10.1093/mnras/staa2227 Spectra are in Figure 4 and compositions are listed in Table 1. Fig 4 Left: En-Fs orthopyroxenes (orthoplot.pdf) En99tau.dat En92tau.dat En90tau.dat En85tau.dat (lower resolution MID-ir spectrum) En55tau.dat En40tau.dat En12tau.dat En1tau.dat Pigeonite: Wo10En62tau.dat Right: Clinopyroxenes in the Enstatite-Diopside-Wollastonite Diopside-Hedenbergite solid-solution series (enst-wol.pdf) En-Dp series. Wo21En79tau.dat Wo30En70tau.dat Wo40En60tau.dat Wollastonite: Wo99En1tau.dat Dp-Hd series Wo50En50tau.dat Wo50En47tau.dat Wo49En36tau.dat Wo47En6tau.dat Pigeonite: Wo36En37tau.dat files are two column ascii. column 1 increment varies between files. column 1 (x) is in increasing wavenumber (cm^-1) column 2 (tau) is absorbance in optical depth units per micron thickness of sample. col1: x to wavelength (micron) conversion is 10^4/x col2: tau to mass absorption coefficient conversion (kappa) is tau * 10^4/rho where rho is the mass density of the specimen (gcm^-3), estimates are in table 1 [Note that kappa contains inherent uncertainties due to the spacing between the grains sampled and the effects discussed in Section 7.1] |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Dataset has been downloaded 116 times. |
| URL | https://zenodo.org/record/5564539 |
| Title | Sakurai's Object revisited: new laboratory data for carbonates and melilites suggest the carrier of 6.9 $µ$m excess absorption is a carbonate |
| Description | We present new room-temperature 1100 - 1800 cm^{-1} spectra of melilite silicates and 600 - 2000 cm^{-1} spectra of three randomly orientated fine-grained carbonates to determine the possible carrier(s) of a 6.9~micron absorption feature observed in a variety of dense astronomical environments including young stellar objects and molecular clouds. We focus on the low-mass post-AGB star Sakurai's Object which has been forming substantial quantities of carbonaceous dust since an eruptive event in the 1990s. Large melilite grains cannot be responsible for the 6.9-micron absorption feature because the similarly-shaped feature in the laboratory spectrum was produced by very low (0.1 per cent by mass) carbonate contamination which was not detected at other wavelengths. Due to the high band-strength of the 6.9-micron feature in carbonates, we conclude that carbonates carry the astronomical 6.9~micron feature. Replacement of melilite with carbonates in models of Sakurai's object improves fits to the 6 - 7-micron Spitzer spectra without significantly altering other conclusions of Bowey's previous models except that there is no link between the feature and the abundance of melilite in meteorites. With magnesite (MgCO3), the abundance of 25-micron-sized SiC grains is increased by 10 - 50 per cent and better constrained. The mass of carbonate dust is similar to the mass of PAH dust. Existing experiments suggest carbonates are stable below 700~K, however it is difficult to ascertain the applicability of these experiments to astronomical environments and more studies are required. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2022 |
| Provided To Others? | Yes |
| Impact | Another paper has been submitted to MNRAS in December 2022 on applying the data to young- stellar object spectra and galaxy spectra. |
| URL | https://arxiv.org/abs/2204.03437 |
| Description | Provision of infrared spectra of minerals for astrophysics. |
| Organisation | Washington University in St Louis |
| Country | United States |
| Sector | Academic/University |
| PI Contribution | I collate and process data, provide astrophysics input, model data, and write up results. |
| Collaborator Contribution | Prof. A. M. Hofmeister provides room temperature infrared laboratory spectra of minerals, mineral specimens and Earth Science expertise, collaborates in the writing-up phase. |
| Impact | The collaboration is multi-disciplinary - Astrophysics and Earth and Planetary Science. 6 publications, to date. Cross-disciplinary conversations have greatly benefited both of us and provide impact in both disciplines (work is cited by both fields). Bowey, J. E. and Hofmeister, A. M., 2022, MNRAS 513,1774-1784 Sakurai's Object revisited: new laboratory data for carbonates and melilites suggest the carrier of 6.9- µm excess absorption is a carbonate Bowey, J. E., Hofmeister, A., Keppel, E. 2020, MNRAS 497,3658-3673, Infrared Spectra of Pyroxenes (Crystalline Chain Silicates) at Room Temperature Hofmeister A. M & Bowey J. E. 2006 MNRAS, 367, 577-591, Quantitative IR spectra of hydrosilicates and related minerals Bowey J. E. & Hofmeister A. M. 2005 MNRAS, 358, 1383-1393, Overtones of silicate and aluminate minerals and the 5-8µm ice band s of deeply embedded objects Bowey, J. E., Barlow, M. J., Molster, F. J., Hofmeister, A. M., Lee, C., Tucker, C., Lim, T., Ade, P. A. R. & Waters, L. B. F. M. 2002 MNRAS, 331, L1-L6, The 69-micron forsterite band as a dust temperature indicator Bowey J. E., Lee C., Tucker C., Hofmeister A. M., Ade P. A. R., Barlow, M. J. 2001 MNRAS 325, 886-896, Temperature effects on the 15-85-micron spectra of olivines and pyroxenes |
| Description | Where does V4334 Sgr make molecules and dust: Is it a born-again giant or a flashing white dwarf in a binary system? |
| Organisation | Arizona State University |
| Country | United States |
| Sector | Academic/University |
| PI Contribution | J. Bowey: expert in cross-disciplinary observational and laboratory spectroscopy of dust in the IR. Expert in the application of meteoritics and mineralogy to astrophysical modelling including studies of Sakurai's Object, the ISM and YSOs. PI- author of proposal and team-leader |
| Collaborator Contribution | A. Evans: expert in circumstellar dust, especially around evolved stars and novae. Author of nineteen papers on Sakurai's Object. Data modelling, co-writer of proposal. C.E. Woodward: expert in nova spectroscopy and analysis of dust and gas emission; co-author on numerous papers on Sakuari's Object. K. H. Hinkle: expert on near- and mid-infrared spectroscopy of late-type stars and circumstellar environments. He has written a series of papers on near-IR AO imaging and spectroscopy of Sakurai's Object. R. Joyce has extensive experience in the development of infrared detectors and the design and construction of IR imaging and spectroscopic instrumentation. Telescope Scientist for the Mayall 4-meter telescope at Kitt Peak National Observatory and supply and support of the Dark Energy Spectroscopic Instrument. His research interests include the study of late-type and post-AGB stars in the infrared. O. Jones is an expert on infrared imaging and spectroscopy of stars in the Local Volume. She is a member of the science and instrument teams for Mid-Infrared Instrument (MIRI) on JWST. A. J. Adamson absorption by interstellar dust and molecules - observational, spectroscopy and spectropolarimetry in the visible and infrared. Observatory operations and development. D.Banerjee: expert on novae and planetary nebulae including the dust they produce. Instrumentalist, observer in OIR. G. Clayton is an expert in the evolution of RCB stars and their dust. S. Eyres: Led the multi-year observing campaign of IR spectroscopy of V4334 Sgr during its rapidly evolving phase as well as securing radio imaging of the pre-VLTP planetary nebula, as such provides critical insight to our interpretation of the data from this proposal R. Gehrz is an expert in UV/Optical/IR ground- and space-based observational astrophysics, instrumentation development, and telescope construction. Research on the physical properties of astrophysical grains in interstellar, circumstellar, and solar system environments, the physics of nova explosions, the circumstellar ejecta of luminous evolved stars. T.R. Geballe: Emeritus Astronomer at the NOIRLab Gemini North Observatory. Research interests include the Galactic center, the interstellar medium, star formation, novae, supernovae, unusual evolved stars, brown dwarfs, and the surfaces, atmospheres, and aurorae of solar system planets and moons. Will contribute to spectral modeling efforts and interpretation as well as in writing/detailed editing of resulting papers. A. Hofmeister expert on laboratory spectroscopy of minerals, provider of laboratory data. She is first author of 104 papers and 2 books. J. Th. van Loon is an expert on stellar mass loss and circumstellar dust, supernova remnants, interstellar medium, young stellar objects and active galactic nuclei, using optical, infrared and radio observations including those obtained with ISO, Spitzer and ALMA. A.L. Mattioda is an expert on laboratory PAH chemistry and spectroscopy. He pioneered the mid-infrared spectroscopy of nitrogen containing PAHs (PANHs) as well as the near-infrared spectra of PAH and PANH cation and anions. He is a co-developer of the PAHIR spectral database (astrochem.org/pahdb), serving as the lead for the experimental data. The PAHIR database is used by astronomers world-wide to interpret IR observations of PAHs. He will help to interpret the PAH features. C.Paladini: expert in VLTI observations, Instrument scientist of MATISSE, expert in evolved stars. P. Sarre is an expert on laboratory spectroscopy of astrophysical molecules and dust and their use for astronomical studies. P. Scicluna: expert on modelling techniques & dust radiative transfer, particularly for evolved stars. MATISSE instrument fellow. S. Starrfield: Regents' Professor of Astrophysics, School of Earth and Space Exploration at Arizona State University. >800 publications mostly in X-Ray, UV, optical, and IR studies of Classical Novae plus the theoretical modeling to understand their explosions. Will contribute ground based observations, data interpretation, data analysis, and theoretical modeling. |
| Impact | Award of 6 hours of observing time with MATISSE at ESO) in Semester 2023B proposal: 111.24SB. |
| Start Year | 2022 |
| Description | Where does V4334 Sgr make molecules and dust: Is it a born-again giant or a flashing white dwarf in a binary system? |
| Organisation | European Southern Observatory (ESO) |
| Department | VLT |
| Country | Chile |
| Sector | Academic/University |
| PI Contribution | J. Bowey: expert in cross-disciplinary observational and laboratory spectroscopy of dust in the IR. Expert in the application of meteoritics and mineralogy to astrophysical modelling including studies of Sakurai's Object, the ISM and YSOs. PI- author of proposal and team-leader |
| Collaborator Contribution | A. Evans: expert in circumstellar dust, especially around evolved stars and novae. Author of nineteen papers on Sakurai's Object. Data modelling, co-writer of proposal. C.E. Woodward: expert in nova spectroscopy and analysis of dust and gas emission; co-author on numerous papers on Sakuari's Object. K. H. Hinkle: expert on near- and mid-infrared spectroscopy of late-type stars and circumstellar environments. He has written a series of papers on near-IR AO imaging and spectroscopy of Sakurai's Object. R. Joyce has extensive experience in the development of infrared detectors and the design and construction of IR imaging and spectroscopic instrumentation. Telescope Scientist for the Mayall 4-meter telescope at Kitt Peak National Observatory and supply and support of the Dark Energy Spectroscopic Instrument. His research interests include the study of late-type and post-AGB stars in the infrared. O. Jones is an expert on infrared imaging and spectroscopy of stars in the Local Volume. She is a member of the science and instrument teams for Mid-Infrared Instrument (MIRI) on JWST. A. J. Adamson absorption by interstellar dust and molecules - observational, spectroscopy and spectropolarimetry in the visible and infrared. Observatory operations and development. D.Banerjee: expert on novae and planetary nebulae including the dust they produce. Instrumentalist, observer in OIR. G. Clayton is an expert in the evolution of RCB stars and their dust. S. Eyres: Led the multi-year observing campaign of IR spectroscopy of V4334 Sgr during its rapidly evolving phase as well as securing radio imaging of the pre-VLTP planetary nebula, as such provides critical insight to our interpretation of the data from this proposal R. Gehrz is an expert in UV/Optical/IR ground- and space-based observational astrophysics, instrumentation development, and telescope construction. Research on the physical properties of astrophysical grains in interstellar, circumstellar, and solar system environments, the physics of nova explosions, the circumstellar ejecta of luminous evolved stars. T.R. Geballe: Emeritus Astronomer at the NOIRLab Gemini North Observatory. Research interests include the Galactic center, the interstellar medium, star formation, novae, supernovae, unusual evolved stars, brown dwarfs, and the surfaces, atmospheres, and aurorae of solar system planets and moons. Will contribute to spectral modeling efforts and interpretation as well as in writing/detailed editing of resulting papers. A. Hofmeister expert on laboratory spectroscopy of minerals, provider of laboratory data. She is first author of 104 papers and 2 books. J. Th. van Loon is an expert on stellar mass loss and circumstellar dust, supernova remnants, interstellar medium, young stellar objects and active galactic nuclei, using optical, infrared and radio observations including those obtained with ISO, Spitzer and ALMA. A.L. Mattioda is an expert on laboratory PAH chemistry and spectroscopy. He pioneered the mid-infrared spectroscopy of nitrogen containing PAHs (PANHs) as well as the near-infrared spectra of PAH and PANH cation and anions. He is a co-developer of the PAHIR spectral database (astrochem.org/pahdb), serving as the lead for the experimental data. The PAHIR database is used by astronomers world-wide to interpret IR observations of PAHs. He will help to interpret the PAH features. C.Paladini: expert in VLTI observations, Instrument scientist of MATISSE, expert in evolved stars. P. Sarre is an expert on laboratory spectroscopy of astrophysical molecules and dust and their use for astronomical studies. P. Scicluna: expert on modelling techniques & dust radiative transfer, particularly for evolved stars. MATISSE instrument fellow. S. Starrfield: Regents' Professor of Astrophysics, School of Earth and Space Exploration at Arizona State University. >800 publications mostly in X-Ray, UV, optical, and IR studies of Classical Novae plus the theoretical modeling to understand their explosions. Will contribute ground based observations, data interpretation, data analysis, and theoretical modeling. |
| Impact | Award of 6 hours of observing time with MATISSE at ESO) in Semester 2023B proposal: 111.24SB. |
| Start Year | 2022 |
| Description | Where does V4334 Sgr make molecules and dust: Is it a born-again giant or a flashing white dwarf in a binary system? |
| Organisation | Keele University |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | J. Bowey: expert in cross-disciplinary observational and laboratory spectroscopy of dust in the IR. Expert in the application of meteoritics and mineralogy to astrophysical modelling including studies of Sakurai's Object, the ISM and YSOs. PI- author of proposal and team-leader |
| Collaborator Contribution | A. Evans: expert in circumstellar dust, especially around evolved stars and novae. Author of nineteen papers on Sakurai's Object. Data modelling, co-writer of proposal. C.E. Woodward: expert in nova spectroscopy and analysis of dust and gas emission; co-author on numerous papers on Sakuari's Object. K. H. Hinkle: expert on near- and mid-infrared spectroscopy of late-type stars and circumstellar environments. He has written a series of papers on near-IR AO imaging and spectroscopy of Sakurai's Object. R. Joyce has extensive experience in the development of infrared detectors and the design and construction of IR imaging and spectroscopic instrumentation. Telescope Scientist for the Mayall 4-meter telescope at Kitt Peak National Observatory and supply and support of the Dark Energy Spectroscopic Instrument. His research interests include the study of late-type and post-AGB stars in the infrared. O. Jones is an expert on infrared imaging and spectroscopy of stars in the Local Volume. She is a member of the science and instrument teams for Mid-Infrared Instrument (MIRI) on JWST. A. J. Adamson absorption by interstellar dust and molecules - observational, spectroscopy and spectropolarimetry in the visible and infrared. Observatory operations and development. D.Banerjee: expert on novae and planetary nebulae including the dust they produce. Instrumentalist, observer in OIR. G. Clayton is an expert in the evolution of RCB stars and their dust. S. Eyres: Led the multi-year observing campaign of IR spectroscopy of V4334 Sgr during its rapidly evolving phase as well as securing radio imaging of the pre-VLTP planetary nebula, as such provides critical insight to our interpretation of the data from this proposal R. Gehrz is an expert in UV/Optical/IR ground- and space-based observational astrophysics, instrumentation development, and telescope construction. Research on the physical properties of astrophysical grains in interstellar, circumstellar, and solar system environments, the physics of nova explosions, the circumstellar ejecta of luminous evolved stars. T.R. Geballe: Emeritus Astronomer at the NOIRLab Gemini North Observatory. Research interests include the Galactic center, the interstellar medium, star formation, novae, supernovae, unusual evolved stars, brown dwarfs, and the surfaces, atmospheres, and aurorae of solar system planets and moons. Will contribute to spectral modeling efforts and interpretation as well as in writing/detailed editing of resulting papers. A. Hofmeister expert on laboratory spectroscopy of minerals, provider of laboratory data. She is first author of 104 papers and 2 books. J. Th. van Loon is an expert on stellar mass loss and circumstellar dust, supernova remnants, interstellar medium, young stellar objects and active galactic nuclei, using optical, infrared and radio observations including those obtained with ISO, Spitzer and ALMA. A.L. Mattioda is an expert on laboratory PAH chemistry and spectroscopy. He pioneered the mid-infrared spectroscopy of nitrogen containing PAHs (PANHs) as well as the near-infrared spectra of PAH and PANH cation and anions. He is a co-developer of the PAHIR spectral database (astrochem.org/pahdb), serving as the lead for the experimental data. The PAHIR database is used by astronomers world-wide to interpret IR observations of PAHs. He will help to interpret the PAH features. C.Paladini: expert in VLTI observations, Instrument scientist of MATISSE, expert in evolved stars. P. Sarre is an expert on laboratory spectroscopy of astrophysical molecules and dust and their use for astronomical studies. P. Scicluna: expert on modelling techniques & dust radiative transfer, particularly for evolved stars. MATISSE instrument fellow. S. Starrfield: Regents' Professor of Astrophysics, School of Earth and Space Exploration at Arizona State University. >800 publications mostly in X-Ray, UV, optical, and IR studies of Classical Novae plus the theoretical modeling to understand their explosions. Will contribute ground based observations, data interpretation, data analysis, and theoretical modeling. |
| Impact | Award of 6 hours of observing time with MATISSE at ESO) in Semester 2023B proposal: 111.24SB. |
| Start Year | 2022 |
| Description | Where does V4334 Sgr make molecules and dust: Is it a born-again giant or a flashing white dwarf in a binary system? |
| Organisation | Louisiana State University |
| Country | United States |
| Sector | Academic/University |
| PI Contribution | J. Bowey: expert in cross-disciplinary observational and laboratory spectroscopy of dust in the IR. Expert in the application of meteoritics and mineralogy to astrophysical modelling including studies of Sakurai's Object, the ISM and YSOs. PI- author of proposal and team-leader |
| Collaborator Contribution | A. Evans: expert in circumstellar dust, especially around evolved stars and novae. Author of nineteen papers on Sakurai's Object. Data modelling, co-writer of proposal. C.E. Woodward: expert in nova spectroscopy and analysis of dust and gas emission; co-author on numerous papers on Sakuari's Object. K. H. Hinkle: expert on near- and mid-infrared spectroscopy of late-type stars and circumstellar environments. He has written a series of papers on near-IR AO imaging and spectroscopy of Sakurai's Object. R. Joyce has extensive experience in the development of infrared detectors and the design and construction of IR imaging and spectroscopic instrumentation. Telescope Scientist for the Mayall 4-meter telescope at Kitt Peak National Observatory and supply and support of the Dark Energy Spectroscopic Instrument. His research interests include the study of late-type and post-AGB stars in the infrared. O. Jones is an expert on infrared imaging and spectroscopy of stars in the Local Volume. She is a member of the science and instrument teams for Mid-Infrared Instrument (MIRI) on JWST. A. J. Adamson absorption by interstellar dust and molecules - observational, spectroscopy and spectropolarimetry in the visible and infrared. Observatory operations and development. D.Banerjee: expert on novae and planetary nebulae including the dust they produce. Instrumentalist, observer in OIR. G. Clayton is an expert in the evolution of RCB stars and their dust. S. Eyres: Led the multi-year observing campaign of IR spectroscopy of V4334 Sgr during its rapidly evolving phase as well as securing radio imaging of the pre-VLTP planetary nebula, as such provides critical insight to our interpretation of the data from this proposal R. Gehrz is an expert in UV/Optical/IR ground- and space-based observational astrophysics, instrumentation development, and telescope construction. Research on the physical properties of astrophysical grains in interstellar, circumstellar, and solar system environments, the physics of nova explosions, the circumstellar ejecta of luminous evolved stars. T.R. Geballe: Emeritus Astronomer at the NOIRLab Gemini North Observatory. Research interests include the Galactic center, the interstellar medium, star formation, novae, supernovae, unusual evolved stars, brown dwarfs, and the surfaces, atmospheres, and aurorae of solar system planets and moons. Will contribute to spectral modeling efforts and interpretation as well as in writing/detailed editing of resulting papers. A. Hofmeister expert on laboratory spectroscopy of minerals, provider of laboratory data. She is first author of 104 papers and 2 books. J. Th. van Loon is an expert on stellar mass loss and circumstellar dust, supernova remnants, interstellar medium, young stellar objects and active galactic nuclei, using optical, infrared and radio observations including those obtained with ISO, Spitzer and ALMA. A.L. Mattioda is an expert on laboratory PAH chemistry and spectroscopy. He pioneered the mid-infrared spectroscopy of nitrogen containing PAHs (PANHs) as well as the near-infrared spectra of PAH and PANH cation and anions. He is a co-developer of the PAHIR spectral database (astrochem.org/pahdb), serving as the lead for the experimental data. The PAHIR database is used by astronomers world-wide to interpret IR observations of PAHs. He will help to interpret the PAH features. C.Paladini: expert in VLTI observations, Instrument scientist of MATISSE, expert in evolved stars. P. Sarre is an expert on laboratory spectroscopy of astrophysical molecules and dust and their use for astronomical studies. P. Scicluna: expert on modelling techniques & dust radiative transfer, particularly for evolved stars. MATISSE instrument fellow. S. Starrfield: Regents' Professor of Astrophysics, School of Earth and Space Exploration at Arizona State University. >800 publications mostly in X-Ray, UV, optical, and IR studies of Classical Novae plus the theoretical modeling to understand their explosions. Will contribute ground based observations, data interpretation, data analysis, and theoretical modeling. |
| Impact | Award of 6 hours of observing time with MATISSE at ESO) in Semester 2023B proposal: 111.24SB. |
| Start Year | 2022 |
| Description | Where does V4334 Sgr make molecules and dust: Is it a born-again giant or a flashing white dwarf in a binary system? |
| Organisation | National Aeronautics and Space Administration (NASA) |
| Department | NASA Ames Exploration Center |
| Country | United States |
| Sector | Public |
| PI Contribution | J. Bowey: expert in cross-disciplinary observational and laboratory spectroscopy of dust in the IR. Expert in the application of meteoritics and mineralogy to astrophysical modelling including studies of Sakurai's Object, the ISM and YSOs. PI- author of proposal and team-leader |
| Collaborator Contribution | A. Evans: expert in circumstellar dust, especially around evolved stars and novae. Author of nineteen papers on Sakurai's Object. Data modelling, co-writer of proposal. C.E. Woodward: expert in nova spectroscopy and analysis of dust and gas emission; co-author on numerous papers on Sakuari's Object. K. H. Hinkle: expert on near- and mid-infrared spectroscopy of late-type stars and circumstellar environments. He has written a series of papers on near-IR AO imaging and spectroscopy of Sakurai's Object. R. Joyce has extensive experience in the development of infrared detectors and the design and construction of IR imaging and spectroscopic instrumentation. Telescope Scientist for the Mayall 4-meter telescope at Kitt Peak National Observatory and supply and support of the Dark Energy Spectroscopic Instrument. His research interests include the study of late-type and post-AGB stars in the infrared. O. Jones is an expert on infrared imaging and spectroscopy of stars in the Local Volume. She is a member of the science and instrument teams for Mid-Infrared Instrument (MIRI) on JWST. A. J. Adamson absorption by interstellar dust and molecules - observational, spectroscopy and spectropolarimetry in the visible and infrared. Observatory operations and development. D.Banerjee: expert on novae and planetary nebulae including the dust they produce. Instrumentalist, observer in OIR. G. Clayton is an expert in the evolution of RCB stars and their dust. S. Eyres: Led the multi-year observing campaign of IR spectroscopy of V4334 Sgr during its rapidly evolving phase as well as securing radio imaging of the pre-VLTP planetary nebula, as such provides critical insight to our interpretation of the data from this proposal R. Gehrz is an expert in UV/Optical/IR ground- and space-based observational astrophysics, instrumentation development, and telescope construction. Research on the physical properties of astrophysical grains in interstellar, circumstellar, and solar system environments, the physics of nova explosions, the circumstellar ejecta of luminous evolved stars. T.R. Geballe: Emeritus Astronomer at the NOIRLab Gemini North Observatory. Research interests include the Galactic center, the interstellar medium, star formation, novae, supernovae, unusual evolved stars, brown dwarfs, and the surfaces, atmospheres, and aurorae of solar system planets and moons. Will contribute to spectral modeling efforts and interpretation as well as in writing/detailed editing of resulting papers. A. Hofmeister expert on laboratory spectroscopy of minerals, provider of laboratory data. She is first author of 104 papers and 2 books. J. Th. van Loon is an expert on stellar mass loss and circumstellar dust, supernova remnants, interstellar medium, young stellar objects and active galactic nuclei, using optical, infrared and radio observations including those obtained with ISO, Spitzer and ALMA. A.L. Mattioda is an expert on laboratory PAH chemistry and spectroscopy. He pioneered the mid-infrared spectroscopy of nitrogen containing PAHs (PANHs) as well as the near-infrared spectra of PAH and PANH cation and anions. He is a co-developer of the PAHIR spectral database (astrochem.org/pahdb), serving as the lead for the experimental data. The PAHIR database is used by astronomers world-wide to interpret IR observations of PAHs. He will help to interpret the PAH features. C.Paladini: expert in VLTI observations, Instrument scientist of MATISSE, expert in evolved stars. P. Sarre is an expert on laboratory spectroscopy of astrophysical molecules and dust and their use for astronomical studies. P. Scicluna: expert on modelling techniques & dust radiative transfer, particularly for evolved stars. MATISSE instrument fellow. S. Starrfield: Regents' Professor of Astrophysics, School of Earth and Space Exploration at Arizona State University. >800 publications mostly in X-Ray, UV, optical, and IR studies of Classical Novae plus the theoretical modeling to understand their explosions. Will contribute ground based observations, data interpretation, data analysis, and theoretical modeling. |
| Impact | Award of 6 hours of observing time with MATISSE at ESO) in Semester 2023B proposal: 111.24SB. |
| Start Year | 2022 |
| Description | Where does V4334 Sgr make molecules and dust: Is it a born-again giant or a flashing white dwarf in a binary system? |
| Organisation | Physical Research Laboratory |
| Country | India |
| Sector | Academic/University |
| PI Contribution | J. Bowey: expert in cross-disciplinary observational and laboratory spectroscopy of dust in the IR. Expert in the application of meteoritics and mineralogy to astrophysical modelling including studies of Sakurai's Object, the ISM and YSOs. PI- author of proposal and team-leader |
| Collaborator Contribution | A. Evans: expert in circumstellar dust, especially around evolved stars and novae. Author of nineteen papers on Sakurai's Object. Data modelling, co-writer of proposal. C.E. Woodward: expert in nova spectroscopy and analysis of dust and gas emission; co-author on numerous papers on Sakuari's Object. K. H. Hinkle: expert on near- and mid-infrared spectroscopy of late-type stars and circumstellar environments. He has written a series of papers on near-IR AO imaging and spectroscopy of Sakurai's Object. R. Joyce has extensive experience in the development of infrared detectors and the design and construction of IR imaging and spectroscopic instrumentation. Telescope Scientist for the Mayall 4-meter telescope at Kitt Peak National Observatory and supply and support of the Dark Energy Spectroscopic Instrument. His research interests include the study of late-type and post-AGB stars in the infrared. O. Jones is an expert on infrared imaging and spectroscopy of stars in the Local Volume. She is a member of the science and instrument teams for Mid-Infrared Instrument (MIRI) on JWST. A. J. Adamson absorption by interstellar dust and molecules - observational, spectroscopy and spectropolarimetry in the visible and infrared. Observatory operations and development. D.Banerjee: expert on novae and planetary nebulae including the dust they produce. Instrumentalist, observer in OIR. G. Clayton is an expert in the evolution of RCB stars and their dust. S. Eyres: Led the multi-year observing campaign of IR spectroscopy of V4334 Sgr during its rapidly evolving phase as well as securing radio imaging of the pre-VLTP planetary nebula, as such provides critical insight to our interpretation of the data from this proposal R. Gehrz is an expert in UV/Optical/IR ground- and space-based observational astrophysics, instrumentation development, and telescope construction. Research on the physical properties of astrophysical grains in interstellar, circumstellar, and solar system environments, the physics of nova explosions, the circumstellar ejecta of luminous evolved stars. T.R. Geballe: Emeritus Astronomer at the NOIRLab Gemini North Observatory. Research interests include the Galactic center, the interstellar medium, star formation, novae, supernovae, unusual evolved stars, brown dwarfs, and the surfaces, atmospheres, and aurorae of solar system planets and moons. Will contribute to spectral modeling efforts and interpretation as well as in writing/detailed editing of resulting papers. A. Hofmeister expert on laboratory spectroscopy of minerals, provider of laboratory data. She is first author of 104 papers and 2 books. J. Th. van Loon is an expert on stellar mass loss and circumstellar dust, supernova remnants, interstellar medium, young stellar objects and active galactic nuclei, using optical, infrared and radio observations including those obtained with ISO, Spitzer and ALMA. A.L. Mattioda is an expert on laboratory PAH chemistry and spectroscopy. He pioneered the mid-infrared spectroscopy of nitrogen containing PAHs (PANHs) as well as the near-infrared spectra of PAH and PANH cation and anions. He is a co-developer of the PAHIR spectral database (astrochem.org/pahdb), serving as the lead for the experimental data. The PAHIR database is used by astronomers world-wide to interpret IR observations of PAHs. He will help to interpret the PAH features. C.Paladini: expert in VLTI observations, Instrument scientist of MATISSE, expert in evolved stars. P. Sarre is an expert on laboratory spectroscopy of astrophysical molecules and dust and their use for astronomical studies. P. Scicluna: expert on modelling techniques & dust radiative transfer, particularly for evolved stars. MATISSE instrument fellow. S. Starrfield: Regents' Professor of Astrophysics, School of Earth and Space Exploration at Arizona State University. >800 publications mostly in X-Ray, UV, optical, and IR studies of Classical Novae plus the theoretical modeling to understand their explosions. Will contribute ground based observations, data interpretation, data analysis, and theoretical modeling. |
| Impact | Award of 6 hours of observing time with MATISSE at ESO) in Semester 2023B proposal: 111.24SB. |
| Start Year | 2022 |
| Description | Where does V4334 Sgr make molecules and dust: Is it a born-again giant or a flashing white dwarf in a binary system? |
| Organisation | Science and Technologies Facilities Council (STFC) |
| Department | United Kingdom Astronomy Technology Centre |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | J. Bowey: expert in cross-disciplinary observational and laboratory spectroscopy of dust in the IR. Expert in the application of meteoritics and mineralogy to astrophysical modelling including studies of Sakurai's Object, the ISM and YSOs. PI- author of proposal and team-leader |
| Collaborator Contribution | A. Evans: expert in circumstellar dust, especially around evolved stars and novae. Author of nineteen papers on Sakurai's Object. Data modelling, co-writer of proposal. C.E. Woodward: expert in nova spectroscopy and analysis of dust and gas emission; co-author on numerous papers on Sakuari's Object. K. H. Hinkle: expert on near- and mid-infrared spectroscopy of late-type stars and circumstellar environments. He has written a series of papers on near-IR AO imaging and spectroscopy of Sakurai's Object. R. Joyce has extensive experience in the development of infrared detectors and the design and construction of IR imaging and spectroscopic instrumentation. Telescope Scientist for the Mayall 4-meter telescope at Kitt Peak National Observatory and supply and support of the Dark Energy Spectroscopic Instrument. His research interests include the study of late-type and post-AGB stars in the infrared. O. Jones is an expert on infrared imaging and spectroscopy of stars in the Local Volume. She is a member of the science and instrument teams for Mid-Infrared Instrument (MIRI) on JWST. A. J. Adamson absorption by interstellar dust and molecules - observational, spectroscopy and spectropolarimetry in the visible and infrared. Observatory operations and development. D.Banerjee: expert on novae and planetary nebulae including the dust they produce. Instrumentalist, observer in OIR. G. Clayton is an expert in the evolution of RCB stars and their dust. S. Eyres: Led the multi-year observing campaign of IR spectroscopy of V4334 Sgr during its rapidly evolving phase as well as securing radio imaging of the pre-VLTP planetary nebula, as such provides critical insight to our interpretation of the data from this proposal R. Gehrz is an expert in UV/Optical/IR ground- and space-based observational astrophysics, instrumentation development, and telescope construction. Research on the physical properties of astrophysical grains in interstellar, circumstellar, and solar system environments, the physics of nova explosions, the circumstellar ejecta of luminous evolved stars. T.R. Geballe: Emeritus Astronomer at the NOIRLab Gemini North Observatory. Research interests include the Galactic center, the interstellar medium, star formation, novae, supernovae, unusual evolved stars, brown dwarfs, and the surfaces, atmospheres, and aurorae of solar system planets and moons. Will contribute to spectral modeling efforts and interpretation as well as in writing/detailed editing of resulting papers. A. Hofmeister expert on laboratory spectroscopy of minerals, provider of laboratory data. She is first author of 104 papers and 2 books. J. Th. van Loon is an expert on stellar mass loss and circumstellar dust, supernova remnants, interstellar medium, young stellar objects and active galactic nuclei, using optical, infrared and radio observations including those obtained with ISO, Spitzer and ALMA. A.L. Mattioda is an expert on laboratory PAH chemistry and spectroscopy. He pioneered the mid-infrared spectroscopy of nitrogen containing PAHs (PANHs) as well as the near-infrared spectra of PAH and PANH cation and anions. He is a co-developer of the PAHIR spectral database (astrochem.org/pahdb), serving as the lead for the experimental data. The PAHIR database is used by astronomers world-wide to interpret IR observations of PAHs. He will help to interpret the PAH features. C.Paladini: expert in VLTI observations, Instrument scientist of MATISSE, expert in evolved stars. P. Sarre is an expert on laboratory spectroscopy of astrophysical molecules and dust and their use for astronomical studies. P. Scicluna: expert on modelling techniques & dust radiative transfer, particularly for evolved stars. MATISSE instrument fellow. S. Starrfield: Regents' Professor of Astrophysics, School of Earth and Space Exploration at Arizona State University. >800 publications mostly in X-Ray, UV, optical, and IR studies of Classical Novae plus the theoretical modeling to understand their explosions. Will contribute ground based observations, data interpretation, data analysis, and theoretical modeling. |
| Impact | Award of 6 hours of observing time with MATISSE at ESO) in Semester 2023B proposal: 111.24SB. |
| Start Year | 2022 |
| Description | Where does V4334 Sgr make molecules and dust: Is it a born-again giant or a flashing white dwarf in a binary system? |
| Organisation | University of Central Lancashire |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | J. Bowey: expert in cross-disciplinary observational and laboratory spectroscopy of dust in the IR. Expert in the application of meteoritics and mineralogy to astrophysical modelling including studies of Sakurai's Object, the ISM and YSOs. PI- author of proposal and team-leader |
| Collaborator Contribution | A. Evans: expert in circumstellar dust, especially around evolved stars and novae. Author of nineteen papers on Sakurai's Object. Data modelling, co-writer of proposal. C.E. Woodward: expert in nova spectroscopy and analysis of dust and gas emission; co-author on numerous papers on Sakuari's Object. K. H. Hinkle: expert on near- and mid-infrared spectroscopy of late-type stars and circumstellar environments. He has written a series of papers on near-IR AO imaging and spectroscopy of Sakurai's Object. R. Joyce has extensive experience in the development of infrared detectors and the design and construction of IR imaging and spectroscopic instrumentation. Telescope Scientist for the Mayall 4-meter telescope at Kitt Peak National Observatory and supply and support of the Dark Energy Spectroscopic Instrument. His research interests include the study of late-type and post-AGB stars in the infrared. O. Jones is an expert on infrared imaging and spectroscopy of stars in the Local Volume. She is a member of the science and instrument teams for Mid-Infrared Instrument (MIRI) on JWST. A. J. Adamson absorption by interstellar dust and molecules - observational, spectroscopy and spectropolarimetry in the visible and infrared. Observatory operations and development. D.Banerjee: expert on novae and planetary nebulae including the dust they produce. Instrumentalist, observer in OIR. G. Clayton is an expert in the evolution of RCB stars and their dust. S. Eyres: Led the multi-year observing campaign of IR spectroscopy of V4334 Sgr during its rapidly evolving phase as well as securing radio imaging of the pre-VLTP planetary nebula, as such provides critical insight to our interpretation of the data from this proposal R. Gehrz is an expert in UV/Optical/IR ground- and space-based observational astrophysics, instrumentation development, and telescope construction. Research on the physical properties of astrophysical grains in interstellar, circumstellar, and solar system environments, the physics of nova explosions, the circumstellar ejecta of luminous evolved stars. T.R. Geballe: Emeritus Astronomer at the NOIRLab Gemini North Observatory. Research interests include the Galactic center, the interstellar medium, star formation, novae, supernovae, unusual evolved stars, brown dwarfs, and the surfaces, atmospheres, and aurorae of solar system planets and moons. Will contribute to spectral modeling efforts and interpretation as well as in writing/detailed editing of resulting papers. A. Hofmeister expert on laboratory spectroscopy of minerals, provider of laboratory data. She is first author of 104 papers and 2 books. J. Th. van Loon is an expert on stellar mass loss and circumstellar dust, supernova remnants, interstellar medium, young stellar objects and active galactic nuclei, using optical, infrared and radio observations including those obtained with ISO, Spitzer and ALMA. A.L. Mattioda is an expert on laboratory PAH chemistry and spectroscopy. He pioneered the mid-infrared spectroscopy of nitrogen containing PAHs (PANHs) as well as the near-infrared spectra of PAH and PANH cation and anions. He is a co-developer of the PAHIR spectral database (astrochem.org/pahdb), serving as the lead for the experimental data. The PAHIR database is used by astronomers world-wide to interpret IR observations of PAHs. He will help to interpret the PAH features. C.Paladini: expert in VLTI observations, Instrument scientist of MATISSE, expert in evolved stars. P. Sarre is an expert on laboratory spectroscopy of astrophysical molecules and dust and their use for astronomical studies. P. Scicluna: expert on modelling techniques & dust radiative transfer, particularly for evolved stars. MATISSE instrument fellow. S. Starrfield: Regents' Professor of Astrophysics, School of Earth and Space Exploration at Arizona State University. >800 publications mostly in X-Ray, UV, optical, and IR studies of Classical Novae plus the theoretical modeling to understand their explosions. Will contribute ground based observations, data interpretation, data analysis, and theoretical modeling. |
| Impact | Award of 6 hours of observing time with MATISSE at ESO) in Semester 2023B proposal: 111.24SB. |
| Start Year | 2022 |
| Description | Where does V4334 Sgr make molecules and dust: Is it a born-again giant or a flashing white dwarf in a binary system? |
| Organisation | University of Minnesota |
| Country | United States |
| Sector | Academic/University |
| PI Contribution | J. Bowey: expert in cross-disciplinary observational and laboratory spectroscopy of dust in the IR. Expert in the application of meteoritics and mineralogy to astrophysical modelling including studies of Sakurai's Object, the ISM and YSOs. PI- author of proposal and team-leader |
| Collaborator Contribution | A. Evans: expert in circumstellar dust, especially around evolved stars and novae. Author of nineteen papers on Sakurai's Object. Data modelling, co-writer of proposal. C.E. Woodward: expert in nova spectroscopy and analysis of dust and gas emission; co-author on numerous papers on Sakuari's Object. K. H. Hinkle: expert on near- and mid-infrared spectroscopy of late-type stars and circumstellar environments. He has written a series of papers on near-IR AO imaging and spectroscopy of Sakurai's Object. R. Joyce has extensive experience in the development of infrared detectors and the design and construction of IR imaging and spectroscopic instrumentation. Telescope Scientist for the Mayall 4-meter telescope at Kitt Peak National Observatory and supply and support of the Dark Energy Spectroscopic Instrument. His research interests include the study of late-type and post-AGB stars in the infrared. O. Jones is an expert on infrared imaging and spectroscopy of stars in the Local Volume. She is a member of the science and instrument teams for Mid-Infrared Instrument (MIRI) on JWST. A. J. Adamson absorption by interstellar dust and molecules - observational, spectroscopy and spectropolarimetry in the visible and infrared. Observatory operations and development. D.Banerjee: expert on novae and planetary nebulae including the dust they produce. Instrumentalist, observer in OIR. G. Clayton is an expert in the evolution of RCB stars and their dust. S. Eyres: Led the multi-year observing campaign of IR spectroscopy of V4334 Sgr during its rapidly evolving phase as well as securing radio imaging of the pre-VLTP planetary nebula, as such provides critical insight to our interpretation of the data from this proposal R. Gehrz is an expert in UV/Optical/IR ground- and space-based observational astrophysics, instrumentation development, and telescope construction. Research on the physical properties of astrophysical grains in interstellar, circumstellar, and solar system environments, the physics of nova explosions, the circumstellar ejecta of luminous evolved stars. T.R. Geballe: Emeritus Astronomer at the NOIRLab Gemini North Observatory. Research interests include the Galactic center, the interstellar medium, star formation, novae, supernovae, unusual evolved stars, brown dwarfs, and the surfaces, atmospheres, and aurorae of solar system planets and moons. Will contribute to spectral modeling efforts and interpretation as well as in writing/detailed editing of resulting papers. A. Hofmeister expert on laboratory spectroscopy of minerals, provider of laboratory data. She is first author of 104 papers and 2 books. J. Th. van Loon is an expert on stellar mass loss and circumstellar dust, supernova remnants, interstellar medium, young stellar objects and active galactic nuclei, using optical, infrared and radio observations including those obtained with ISO, Spitzer and ALMA. A.L. Mattioda is an expert on laboratory PAH chemistry and spectroscopy. He pioneered the mid-infrared spectroscopy of nitrogen containing PAHs (PANHs) as well as the near-infrared spectra of PAH and PANH cation and anions. He is a co-developer of the PAHIR spectral database (astrochem.org/pahdb), serving as the lead for the experimental data. The PAHIR database is used by astronomers world-wide to interpret IR observations of PAHs. He will help to interpret the PAH features. C.Paladini: expert in VLTI observations, Instrument scientist of MATISSE, expert in evolved stars. P. Sarre is an expert on laboratory spectroscopy of astrophysical molecules and dust and their use for astronomical studies. P. Scicluna: expert on modelling techniques & dust radiative transfer, particularly for evolved stars. MATISSE instrument fellow. S. Starrfield: Regents' Professor of Astrophysics, School of Earth and Space Exploration at Arizona State University. >800 publications mostly in X-Ray, UV, optical, and IR studies of Classical Novae plus the theoretical modeling to understand their explosions. Will contribute ground based observations, data interpretation, data analysis, and theoretical modeling. |
| Impact | Award of 6 hours of observing time with MATISSE at ESO) in Semester 2023B proposal: 111.24SB. |
| Start Year | 2022 |
| Description | Where does V4334 Sgr make molecules and dust: Is it a born-again giant or a flashing white dwarf in a binary system? |
| Organisation | University of Nottingham |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | J. Bowey: expert in cross-disciplinary observational and laboratory spectroscopy of dust in the IR. Expert in the application of meteoritics and mineralogy to astrophysical modelling including studies of Sakurai's Object, the ISM and YSOs. PI- author of proposal and team-leader |
| Collaborator Contribution | A. Evans: expert in circumstellar dust, especially around evolved stars and novae. Author of nineteen papers on Sakurai's Object. Data modelling, co-writer of proposal. C.E. Woodward: expert in nova spectroscopy and analysis of dust and gas emission; co-author on numerous papers on Sakuari's Object. K. H. Hinkle: expert on near- and mid-infrared spectroscopy of late-type stars and circumstellar environments. He has written a series of papers on near-IR AO imaging and spectroscopy of Sakurai's Object. R. Joyce has extensive experience in the development of infrared detectors and the design and construction of IR imaging and spectroscopic instrumentation. Telescope Scientist for the Mayall 4-meter telescope at Kitt Peak National Observatory and supply and support of the Dark Energy Spectroscopic Instrument. His research interests include the study of late-type and post-AGB stars in the infrared. O. Jones is an expert on infrared imaging and spectroscopy of stars in the Local Volume. She is a member of the science and instrument teams for Mid-Infrared Instrument (MIRI) on JWST. A. J. Adamson absorption by interstellar dust and molecules - observational, spectroscopy and spectropolarimetry in the visible and infrared. Observatory operations and development. D.Banerjee: expert on novae and planetary nebulae including the dust they produce. Instrumentalist, observer in OIR. G. Clayton is an expert in the evolution of RCB stars and their dust. S. Eyres: Led the multi-year observing campaign of IR spectroscopy of V4334 Sgr during its rapidly evolving phase as well as securing radio imaging of the pre-VLTP planetary nebula, as such provides critical insight to our interpretation of the data from this proposal R. Gehrz is an expert in UV/Optical/IR ground- and space-based observational astrophysics, instrumentation development, and telescope construction. Research on the physical properties of astrophysical grains in interstellar, circumstellar, and solar system environments, the physics of nova explosions, the circumstellar ejecta of luminous evolved stars. T.R. Geballe: Emeritus Astronomer at the NOIRLab Gemini North Observatory. Research interests include the Galactic center, the interstellar medium, star formation, novae, supernovae, unusual evolved stars, brown dwarfs, and the surfaces, atmospheres, and aurorae of solar system planets and moons. Will contribute to spectral modeling efforts and interpretation as well as in writing/detailed editing of resulting papers. A. Hofmeister expert on laboratory spectroscopy of minerals, provider of laboratory data. She is first author of 104 papers and 2 books. J. Th. van Loon is an expert on stellar mass loss and circumstellar dust, supernova remnants, interstellar medium, young stellar objects and active galactic nuclei, using optical, infrared and radio observations including those obtained with ISO, Spitzer and ALMA. A.L. Mattioda is an expert on laboratory PAH chemistry and spectroscopy. He pioneered the mid-infrared spectroscopy of nitrogen containing PAHs (PANHs) as well as the near-infrared spectra of PAH and PANH cation and anions. He is a co-developer of the PAHIR spectral database (astrochem.org/pahdb), serving as the lead for the experimental data. The PAHIR database is used by astronomers world-wide to interpret IR observations of PAHs. He will help to interpret the PAH features. C.Paladini: expert in VLTI observations, Instrument scientist of MATISSE, expert in evolved stars. P. Sarre is an expert on laboratory spectroscopy of astrophysical molecules and dust and their use for astronomical studies. P. Scicluna: expert on modelling techniques & dust radiative transfer, particularly for evolved stars. MATISSE instrument fellow. S. Starrfield: Regents' Professor of Astrophysics, School of Earth and Space Exploration at Arizona State University. >800 publications mostly in X-Ray, UV, optical, and IR studies of Classical Novae plus the theoretical modeling to understand their explosions. Will contribute ground based observations, data interpretation, data analysis, and theoretical modeling. |
| Impact | Award of 6 hours of observing time with MATISSE at ESO) in Semester 2023B proposal: 111.24SB. |
| Start Year | 2022 |
| Description | Where does V4334 Sgr make molecules and dust: Is it a born-again giant or a flashing white dwarf in a binary system? |
| Organisation | University of Vienna |
| Country | Austria |
| Sector | Academic/University |
| PI Contribution | J. Bowey: expert in cross-disciplinary observational and laboratory spectroscopy of dust in the IR. Expert in the application of meteoritics and mineralogy to astrophysical modelling including studies of Sakurai's Object, the ISM and YSOs. PI- author of proposal and team-leader |
| Collaborator Contribution | A. Evans: expert in circumstellar dust, especially around evolved stars and novae. Author of nineteen papers on Sakurai's Object. Data modelling, co-writer of proposal. C.E. Woodward: expert in nova spectroscopy and analysis of dust and gas emission; co-author on numerous papers on Sakuari's Object. K. H. Hinkle: expert on near- and mid-infrared spectroscopy of late-type stars and circumstellar environments. He has written a series of papers on near-IR AO imaging and spectroscopy of Sakurai's Object. R. Joyce has extensive experience in the development of infrared detectors and the design and construction of IR imaging and spectroscopic instrumentation. Telescope Scientist for the Mayall 4-meter telescope at Kitt Peak National Observatory and supply and support of the Dark Energy Spectroscopic Instrument. His research interests include the study of late-type and post-AGB stars in the infrared. O. Jones is an expert on infrared imaging and spectroscopy of stars in the Local Volume. She is a member of the science and instrument teams for Mid-Infrared Instrument (MIRI) on JWST. A. J. Adamson absorption by interstellar dust and molecules - observational, spectroscopy and spectropolarimetry in the visible and infrared. Observatory operations and development. D.Banerjee: expert on novae and planetary nebulae including the dust they produce. Instrumentalist, observer in OIR. G. Clayton is an expert in the evolution of RCB stars and their dust. S. Eyres: Led the multi-year observing campaign of IR spectroscopy of V4334 Sgr during its rapidly evolving phase as well as securing radio imaging of the pre-VLTP planetary nebula, as such provides critical insight to our interpretation of the data from this proposal R. Gehrz is an expert in UV/Optical/IR ground- and space-based observational astrophysics, instrumentation development, and telescope construction. Research on the physical properties of astrophysical grains in interstellar, circumstellar, and solar system environments, the physics of nova explosions, the circumstellar ejecta of luminous evolved stars. T.R. Geballe: Emeritus Astronomer at the NOIRLab Gemini North Observatory. Research interests include the Galactic center, the interstellar medium, star formation, novae, supernovae, unusual evolved stars, brown dwarfs, and the surfaces, atmospheres, and aurorae of solar system planets and moons. Will contribute to spectral modeling efforts and interpretation as well as in writing/detailed editing of resulting papers. A. Hofmeister expert on laboratory spectroscopy of minerals, provider of laboratory data. She is first author of 104 papers and 2 books. J. Th. van Loon is an expert on stellar mass loss and circumstellar dust, supernova remnants, interstellar medium, young stellar objects and active galactic nuclei, using optical, infrared and radio observations including those obtained with ISO, Spitzer and ALMA. A.L. Mattioda is an expert on laboratory PAH chemistry and spectroscopy. He pioneered the mid-infrared spectroscopy of nitrogen containing PAHs (PANHs) as well as the near-infrared spectra of PAH and PANH cation and anions. He is a co-developer of the PAHIR spectral database (astrochem.org/pahdb), serving as the lead for the experimental data. The PAHIR database is used by astronomers world-wide to interpret IR observations of PAHs. He will help to interpret the PAH features. C.Paladini: expert in VLTI observations, Instrument scientist of MATISSE, expert in evolved stars. P. Sarre is an expert on laboratory spectroscopy of astrophysical molecules and dust and their use for astronomical studies. P. Scicluna: expert on modelling techniques & dust radiative transfer, particularly for evolved stars. MATISSE instrument fellow. S. Starrfield: Regents' Professor of Astrophysics, School of Earth and Space Exploration at Arizona State University. >800 publications mostly in X-Ray, UV, optical, and IR studies of Classical Novae plus the theoretical modeling to understand their explosions. Will contribute ground based observations, data interpretation, data analysis, and theoretical modeling. |
| Impact | Award of 6 hours of observing time with MATISSE at ESO) in Semester 2023B proposal: 111.24SB. |
| Start Year | 2022 |
| Description | Where does V4334 Sgr make molecules and dust: Is it a born-again giant or a flashing white dwarf in a binary system? |
| Organisation | Washington University in St Louis |
| Country | United States |
| Sector | Academic/University |
| PI Contribution | J. Bowey: expert in cross-disciplinary observational and laboratory spectroscopy of dust in the IR. Expert in the application of meteoritics and mineralogy to astrophysical modelling including studies of Sakurai's Object, the ISM and YSOs. PI- author of proposal and team-leader |
| Collaborator Contribution | A. Evans: expert in circumstellar dust, especially around evolved stars and novae. Author of nineteen papers on Sakurai's Object. Data modelling, co-writer of proposal. C.E. Woodward: expert in nova spectroscopy and analysis of dust and gas emission; co-author on numerous papers on Sakuari's Object. K. H. Hinkle: expert on near- and mid-infrared spectroscopy of late-type stars and circumstellar environments. He has written a series of papers on near-IR AO imaging and spectroscopy of Sakurai's Object. R. Joyce has extensive experience in the development of infrared detectors and the design and construction of IR imaging and spectroscopic instrumentation. Telescope Scientist for the Mayall 4-meter telescope at Kitt Peak National Observatory and supply and support of the Dark Energy Spectroscopic Instrument. His research interests include the study of late-type and post-AGB stars in the infrared. O. Jones is an expert on infrared imaging and spectroscopy of stars in the Local Volume. She is a member of the science and instrument teams for Mid-Infrared Instrument (MIRI) on JWST. A. J. Adamson absorption by interstellar dust and molecules - observational, spectroscopy and spectropolarimetry in the visible and infrared. Observatory operations and development. D.Banerjee: expert on novae and planetary nebulae including the dust they produce. Instrumentalist, observer in OIR. G. Clayton is an expert in the evolution of RCB stars and their dust. S. Eyres: Led the multi-year observing campaign of IR spectroscopy of V4334 Sgr during its rapidly evolving phase as well as securing radio imaging of the pre-VLTP planetary nebula, as such provides critical insight to our interpretation of the data from this proposal R. Gehrz is an expert in UV/Optical/IR ground- and space-based observational astrophysics, instrumentation development, and telescope construction. Research on the physical properties of astrophysical grains in interstellar, circumstellar, and solar system environments, the physics of nova explosions, the circumstellar ejecta of luminous evolved stars. T.R. Geballe: Emeritus Astronomer at the NOIRLab Gemini North Observatory. Research interests include the Galactic center, the interstellar medium, star formation, novae, supernovae, unusual evolved stars, brown dwarfs, and the surfaces, atmospheres, and aurorae of solar system planets and moons. Will contribute to spectral modeling efforts and interpretation as well as in writing/detailed editing of resulting papers. A. Hofmeister expert on laboratory spectroscopy of minerals, provider of laboratory data. She is first author of 104 papers and 2 books. J. Th. van Loon is an expert on stellar mass loss and circumstellar dust, supernova remnants, interstellar medium, young stellar objects and active galactic nuclei, using optical, infrared and radio observations including those obtained with ISO, Spitzer and ALMA. A.L. Mattioda is an expert on laboratory PAH chemistry and spectroscopy. He pioneered the mid-infrared spectroscopy of nitrogen containing PAHs (PANHs) as well as the near-infrared spectra of PAH and PANH cation and anions. He is a co-developer of the PAHIR spectral database (astrochem.org/pahdb), serving as the lead for the experimental data. The PAHIR database is used by astronomers world-wide to interpret IR observations of PAHs. He will help to interpret the PAH features. C.Paladini: expert in VLTI observations, Instrument scientist of MATISSE, expert in evolved stars. P. Sarre is an expert on laboratory spectroscopy of astrophysical molecules and dust and their use for astronomical studies. P. Scicluna: expert on modelling techniques & dust radiative transfer, particularly for evolved stars. MATISSE instrument fellow. S. Starrfield: Regents' Professor of Astrophysics, School of Earth and Space Exploration at Arizona State University. >800 publications mostly in X-Ray, UV, optical, and IR studies of Classical Novae plus the theoretical modeling to understand their explosions. Will contribute ground based observations, data interpretation, data analysis, and theoretical modeling. |
| Impact | Award of 6 hours of observing time with MATISSE at ESO) in Semester 2023B proposal: 111.24SB. |
| Start Year | 2022 |
| Description | 13 th Torino Workshop on AGB stars and related Topics and 2 nd Perugia Workshop on Nuclear Astrophysics June 19 th to 24 th 2022 Dust Changes in Sakurai's Object: PAHs, SiC and carbonates (not melilites) |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | A talk about Bowey & Hofmeister 2022 and Bowey 2021. Very positive feed back. I got to meet a cross-disciplinary community of observational and theoretical astrophysicists and meteoriticists. The observing proposal to use MATISSE at ESO was a direct consequence of meeting J. Hron from Vienna University. I did not know the facility existed before this. |
| Year(s) Of Engagement Activity | 2022 |
| URL | https://agenda.infn.it/event/25948/ |
| Description | Astrochemistry group annual meeting: Astrochemistry in the JWST Era virtual meeting, 16-18 June 2021: "Infrared spectra of pyroxenes (crystalline chain silicates) at room temperature" |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Professional Practitioners |
| Results and Impact | A talk about my published laboratory paper Bowey, Hofmeister and Keppel 2020 which included applications to observations of young stellar objects. Outcome was increased visibility of my research and contact with A. Mattioda (NASA - Ames) who is a collaborator in the Sakurai's Object project. |
| Year(s) Of Engagement Activity | 2021 |
| URL | https://www.rsc.org/events/detail/47252/astrochemistry-in-the-jwst-era |
| Description | Convened a parallel session entitled "Beauty of Astronomical Dust" at the National Astronomy Meeting in July 2021 (co-chairs were O. Jones, UKATC, and M. Matsuura, Cardiff). |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Professional Practitioners |
| Results and Impact | Originally planned for 2020, but the National Astronomy Meeting was postponed to 2021 and became an online meeting. I don't know how many people attended. This was a cross-disciplinary session which aimed to enhance the visibility of astronomical dust as a research topic within the astronomical community and to encourage engagement with the planetary science community in time for the launch of JWST. Speakers were from meteoritics and observational and theoretical astrophysics. The abstract was: Dust is ubiquitous in galaxies; it is formed during the creation of supernovae and in the winds of evolved stars; it survives and grows in the diffuse interstellar medium and congregates in molecular clouds before coagulating to form comets, meteorites and planets in young stellar objects. Carbonaceous materials, silicate dust and ices are responsible for extinction, polarization, hidden matter and lots and lots of physical and chemical processes between stars, within and between galaxies. But what is the dust? What are the observational uncertainties? How are observed discrepancies in radio, submm and infrared to X-ray observations to be interpreted? Can meteoriticists, mineralogists and chemists help? There has never been a better opportunity to understand its properties given the forthcoming launch of JWST for mid-infrared observations, JCMT, ALMA, and Herschel results. NAM 2021 will be an excellent opportunity for the discussion of JWST and the development collaborations between theorists,observers, meteoriticists and chemists. I found it very useful to receive abstracts from the community because it helped me update my knowledge after a 13.5 year career break- research groups have come and gone in my absence. The virtual nature of the meeting meant that speakers from Taiwan and Belgium submitted abstracts and gave talks. I also enjoyed the scientific discussion around the topic - I have to learn a lot quickly, so asked a lot of questions. Had a giggle over nomenclature in the different subject areas. I don't think it did my 'career' prospects any harm. |
| Year(s) Of Engagement Activity | 2021 |
| URL | https://nam2021.org/science/parallel-sessions/details/2/104 |
| Description | IAU-sponsored "Unsolved problems in red Giants And suPergiantS virtual discussion meeting,14--18 June 2021: 5-minute pre-recorded talk. "Dust Changes in Sakurai's Object: new PAHs and SiC with silicate growth to 10 µm sizes." |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Presentation about my published paper (Bowey 2021). It was a great discussion meeting and my first time back at an academic conference. I got to meet many international researchers online and to ask lots of questions and this has resulted in national and international collaborations. |
| Year(s) Of Engagement Activity | 2021 |
| URL | https://massivestars.org/gaps-2021-unsolved-problems-in-red-giants-and-supergiants/ |
| Description | Invited talk at the BRIDGCE annual meeting December 2021: Title: What is the chemical and mineralogical composition of astronomical dust? |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Professional Practitioners |
| Results and Impact | The talk has resulted in increased visibility for me within UK research and collaborations with BRIDGCE members. |
| Year(s) Of Engagement Activity | 2021 |
| URL | https://gtr.ukri.org/projects?ref=ST%2FM000958%2F1 |
| Description | Member of BRIDGCE organizing committee for NAM 2022 parallel session: "Bridging stellar interactions with galactic chemical evolution, nucleosynthesis and dust" |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Professional Practitioners |
| Results and Impact | Selected talks for a parallel session at NAM, contributed to the debate. I was responsible for the inclusion of dust as a topic within this session and within the BRIDGCE network. BRIdging Disciplines of Galactic Chemical Evolution (BRIDGCE) has been funded by STFC. |
| Year(s) Of Engagement Activity | 2022 |
| URL | https://nam2022.org/ |
| Description | Member of SPICA proto-planetary disk working group (2019--2021). |
| Form Of Engagement Activity | A formal working group, expert panel or dialogue |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Late appearing member of the SPICA consortium - I didn't contribute much because the project was very advanced by the time I participated. It put me in a good position to participate in the development of PRIMA. |
| Year(s) Of Engagement Activity | 2019,2020,2021 |
| URL | https://ui.adsabs.harvard.edu/abs/2021PASA...38...55K/abstract |
| Description | NAM 2021 virtual meeting, live talk:"Dust changes in Sakurai's Object: PAHs, SiC and coagulation of silicates into 10 µm-sized melilite grains." |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Professional Practitioners |
| Results and Impact | Talk about my first paper on Sakurai's Object: Bowey 2021. |
| Year(s) Of Engagement Activity | 2021 |
| URL | https://nam2021.org/science/parallel-sessions/details/2/104 |
| Description | NAM2022, Warwick Sakurai's Object revisited: new laboratory data for carbonates and melilites suggest the carrier of 6.9 m excess absorption is a carbonate. |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Professional Practitioners |
| Results and Impact | Talk about Bowey & Hofmeister 2022. Visibility in the UK research community. Discussion with other researchers and possible collaborations. |
| Year(s) Of Engagement Activity | 2022 |
| URL | https://nam2022.org/ |
| Description | Panel member in dust working group at PRIMA Far-IR Probe Community Workshop, IPAC, March 2022 to define science goals for the proposed NASA PRobe far-Infrared Mission for Astrophysics |
| Form Of Engagement Activity | A formal working group, expert panel or dialogue |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | NASAs 2020 Decadal survey report, "Pathways to Discovery in Astronomy and Astrophysics for the 2020s", has recommended a new line of space-based observatories classified as probe missions for the coming decade. The report also identified a far-IR or X-ray probe as highest priority to accomplishing the scientific goals. The goal of this community workshop was to discuss and refine the science that could be accomplished with PRIMA (PRobe far-Infrared Mission for Astrophysics) within the cost and schedule envelopes outlined by the survey. Following my submission of three draft science cases, I was invited to give a lightning talk for the Dust and Metals working group (there were only three.) and to be a discussion panel member. Outcomes so far are the inclusion of my science case in the proposal, and an invitation to give a 10 minute talk, and panel membership at a workshop in March 2023. I suspect that if I was employed, I would already be a formal member of the consortium. |
| Year(s) Of Engagement Activity | 2022 |
| URL | https://www.ipac.caltech.edu/event/farirprobe |
| Description | Talk at NAM 2022: What can a returner do? (ED&I in Astronomy session) |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Professional Practitioners |
| Results and Impact | A talk about returning to astronomical research after an extended career break to raise a family. Afterwards - mature members of the audience focussed on the consequences of the extended career break, one audience member congratulated me for showing how older people could contribute to science! A group of younger members came to me afterwards. They were glad that I'd given details about the years of health issues when I was a student because they were having medical challenges and it gave them hope for a good life later on. Feb 2023 update: a British PDRA, in Japan is presenting my slides to an equalities group at JAXA. "What can a returner do?" Abstract: After 7 years as a PDRA I spent 2006 to 2018 out of the workforce as a stay-at-home mother to 2, and then 3 children. I had never intended to take a career break but this can happen when parents are both physicists at the bottleneck between PDRA positions and Lectureships or Fellowships. The children were fun. I also have a life-long invisible disability which negatively affected my formal qualifications, but not my research career. In 2018 I applied for a Returner Fellowship from STFC. I was awarded a 24 month full-time 'pilot' returner Fellowship which began in October 2019. Cardiff University extended my contract for another 6 months to 31st March 2022. I have received no retraining or supervision (I said I didn't need any). Since my return I have: Published 3 first author papers in MNRAS and submitted a fourth (two are single author, none have more than three). Convened a session at NAM 2020. Contributed talks to several online conferences and given an invited talk at another. I wrote a single-author case for the 2021 Roadmap for Astronomy. The future: My minority cross-disciplinary research area should blossom with MIRI/JWST. STFC has extended my grant so I can use unspent travel and experiment money until October. I am now providing (unpaid) scientific into a proposal for PRIMA (a FIR observatory for the 2030s). I am actively excluded from most Research Fellowships, and Academic posts are out of reach even though I remember that "returners and minorities are encouraged to apply". Industry rarely responds to my job applications. So, what can a returner do? I shall talk about successes, surprises and pitfalls. |
| Year(s) Of Engagement Activity | 2022 |
| URL | https://nam2022.org/science/parallel-sessions/details/2/148 |
| Description | Talk to Astronomical Society (Barry) :"Space dust is formed in ancient stars and is required to make planets like Earth- but what is it?" |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Public/other audiences |
| Results and Impact | Talk to a local group of amateur astronomers. Organisers said audience members didn't normally ask so many questions and that my talk was highly accessible. |
| Year(s) Of Engagement Activity | 2022 |
| URL | https://barryastronomical.wordpress.com/ |