A Radio Census of the Massive Stellar Cluster Westerlund 1

Lead Research Organisation: University College London
Department Name: Physics and Astronomy


The goal is to advance our understanding of fundamental physical processes in the evolution of massive stars; these include mass-loss through clumped stellar winds, the incidence and role of binarity, and the mechanical and chemical feedback from outflows.
The PhD project will be primarily based on the ATCA observations of the massive stellar cluster Westerlund 1, with comparative study carried out against other observations gained of the stellar cluster with ALMA.


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Andrews H (2018) Asymmetric ejecta of cool supergiants and hypergiants in the massive cluster Westerlund 1 in Monthly Notices of the Royal Astronomical Society: Letters

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Andrews H (2019) A radio census of the massive stellar cluster Westerlund 1 in Astronomy & Astrophysics

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Fenech D (2018) An ALMA 3 mm continuum census of Westerlund 1 in Astronomy & Astrophysics

Studentship Projects

Project Reference Relationship Related To Start End Student Name
ST/N50449X/1 30/09/2015 30/03/2021
1783852 Studentship ST/N50449X/1 30/09/2016 31/12/2019 Holly Andrews
Title Detections made of Westerlund 1 Radio Survey 
Description Database created of different source detections from radio observations of Westerlund 1. 
Type Of Material Database/Collection of data 
Year Produced 2019 
Provided To Others? No  
Impact Allows for consideration of stellar sources present in the stellar cluster Westerlund 1, and their associated fluxes, spectral indices and source sizes. Also indicates new radio detections of these stellar sources, as well as detections of undetermined objects, some of which have no associated other detection, and some of which have millimetre detection also associated with them. This information will be available in a paper still to be published, hopefully later this year. 
Description Poster Presentation at Radio Stars Conference (MIT Haystack) 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Other audiences
Results and Impact Poster was presented on the research carried out (that was funded directly by the award) at an international conference in the US. Alongside the poster, a summary slide and quick summary of the poster was presented orally to the conference attendees to raise awareness of the poster.
Year(s) Of Engagement Activity 2017
URL https://www.haystack.mit.edu/workshop/Radio-Stars2017/
Description Talk at Conference (NAM - National Astronomy Meeting) 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Postgraduate students
Results and Impact Talk given at the National Astronomy Meeting Conference on work carried out as part of funding for the award.
Year(s) Of Engagement Activity 2017