Mixture Models for improvements of data from Kepler, K2, Gaia and TESS
Lead Research Organisation:
University of Birmingham
Department Name: School of Physics and Astronomy
Abstract
I am using cutting edge statistical methods to improve data reduction for various space telescopes, the data of which is commonly used in exoplanet detection and asteroseismology, the study of stellar vibrations. First and foremost I am using absolute magnitude to classify Red Clump stars in Gaia data, a subclass of Red Giant. I am also working on an analysis of the impact of systematics corrections on exoplanet radii, and have contributed to the data reduction pipeline for TESS by estimating the backgrounds of Full Frame Images (FFIs).
Organisations
Publications
Bugnet L
(2019)
FliPer Class : In search of solar-like pulsators among TESS targets
in Astronomy & Astrophysics
Bugnet L
(2018)
FliPer: A global measure of power density to estimate surface gravities of main-sequence solar-like stars and red giants
in Astronomy & Astrophysics
Bugnet L.
(2018)
FliPer: Classifying TESS pulsating stars
in SF2A-2018: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics
Bugnet L.
(2019)
FliPer$_{Class}$: In search of solar-like pulsators among TESS targets
in arXiv e-prints
Chaplin W
(2020)
Age dating of an early Milky Way merger via asteroseismology of the naked-eye star ? Indi
in Nature Astronomy
Collaboration L
(2018)
Lightkurve: Kepler and TESS time series analysis in Python
in Astrophysics Source Code Library
Davies G
(2017)
Using red clump stars to correct the Gaia DR1 parallaxes
in Astronomy & Astrophysics
Hall O
(2019)
Testing asteroseismology with Gaia DR2: hierarchical models of the Red Clump
in Monthly Notices of the Royal Astronomical Society
Huber D
(2019)
A Hot Saturn Orbiting an Oscillating Late Subgiant Discovered by TESS
in The Astronomical Journal
Huber Daniel
(2019)
A Hot Saturn Orbiting An Oscillating Late Subgiant Discovered by TESS
in arXiv e-prints
Khan S
(2018)
The Red-giant Branch Bump Revisited: Constraints on Envelope Overshooting in a Wide Range of Masses and Metallicities
in The Astrophysical Journal
Studentship Projects
Project Reference | Relationship | Related To | Start | End | Student Name |
---|---|---|---|---|---|
ST/N503939/1 | 01/10/2015 | 30/03/2021 | |||
2046401 | Studentship | ST/N503939/1 | 01/10/2016 | 31/03/2020 | Oliver Hall |
Description | Ogden Trust Alumni fund one-off grants |
Amount | £815 (GBP) |
Funding ID | AFG\100013 |
Organisation | Ogden Trust |
Sector | Charity/Non Profit |
Country | United Kingdom |
Start | 08/2019 |
End | 08/2019 |
Title | Software -- lightkurve.seismology |
Description | Lightkurve.seismology is a sub-module of the Lightkurve Python package that allows a user to take an asteroseismic power-spectrum and determine basic asteroseismic properties -- such as mass and radius -- in a transparent way. |
Type Of Technology | Software |
Year Produced | 2019 |
Open Source License? | Yes |
Impact | Presented software at TASC5/KASC12 conference, received positive feedback from users. Is being applied as a first-look tool in scientific studies. |
URL | https://docs.lightkurve.org/api/lightkurve.seismology.Seismology.html |
Title | lightkurve.periodogram |
Description | I contributed the 'Periodogram' class to the open source 'lightkurve' Python package. |
Type Of Technology | Software |
Year Produced | 2018 |
Open Source License? | Yes |
Impact | 'lightkurve' has been cited in research, and further development of 'periodogram' is underway by other software developers building upon my foundation. |
URL | https://docs.lightkurve.org/index.html |
Description | Author for Astrobites |
Form Of Engagement Activity | A magazine, newsletter or online publication |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Undergraduate students |
Results and Impact | I am an author for the online publication 'Astrobites', where I digest academic papers to an undergraduate level. |
Year(s) Of Engagement Activity | 2019 |
URL | http://www.astrobites.org |