Massive stars are rare, though dominate the radiative, mechanical and chemical feedback in star-forming galaxies. Metal-poor massive stars are especially important astrophysically since they are believed to be the progenitors of LIGO/Virgo gravitational wave mergers, and can be seen collectively in the rest-frame ultraviolet light of distant star-forming galaxies. This project seeks to exploit a major new 1000 orbit Hubble Space Telescope Legacy programme, ULLYSES, which will be obtaining high quality ultraviolet spectroscopic observations of metal-poor massive stars in the Local Group from 2020 to 2022, from which physical, chemical and wind properties will be obtained, allowing refinements to mass-loss prescriptions for massive stars, including the role of metallicity in driving winds from comparison with Galactic counterparts.
Science Graduate School: As a PhD student in one of the science departments at the University of Sheffield, you’ll be part of the Science Graduate School – a community of postgraduate researchers working across biology, chemistry, physics, mathematics and psychology. You’ll get access to training opportunities designed to support your career development by helping you gain professional skills that are essential in all areas of science. You’ll be able to learn how to recognise good research and research behaviour, improve your communication abilities and experience technologies that are used in academia, industry and many related careers. Visit http://www.sheffield.ac.uk/sgs to learn more.