Research Division Seminar
Modelling the expanding stellar atmospheres of massive stars across the HRD
Abstract
Massive stars play a vital role in shaping the cosmic matter cycle and driving galaxy evolution, chemically enriching their host galaxy through their powerful stellar winds. Understanding the physical processes behind these mass-loss events is key to producing accurate model predictions. Despite its importance, stellar atmosphere modelling poses several challenges. In this talk, we will explore these challenges accross a range of massive stellar types, from OB main-sequence stars to evolved red supergiants and Wolf-Rayets. With these insights, I will further discuss the consequences of mass outflows on stellar evolution and the surrounding environment.
About the talk
University of Heidelberg
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About the speaker
Gemma González-Torà is a post-doc working at the Emmy Noether Research Group on Stellar Atmospheres and Mass Loss led by Dr. Sander at the Astronomisches Rechen-Institut (ARI), University of Heidelberg. She is currently working on spectroscopic analysis of OB and WR stars using stellar atmosphere models. She is also very interested in studying the interplay between massive stars and their host galaxies. She did her PhD jointly at ESO Garching and Liverpool John Moores University, where she developed a model to add the stellar wind contribution to the extended atmospheres of Red Supergiants using spectro-interferometric observations. She is currently visiting the IAC as part of the early research visitor program.