Red supergiants and stellar evolution
Sylvia Ekstr\"om, Cyril Georgy, Georges Meynet, Jose Groh, Anah\'i, Granada
TL;DR
This paper reviews the importance of red supergiants in stellar evolution, examining how metallicity and rotation influence their development and comparing theoretical predictions with observations.
Contribution
It provides a comprehensive review of how metallicity and rotation affect RSG evolution and their role as indicators of main-sequence history.
Findings
Metallicity and rotation significantly influence RSG evolution.
Theoretical population ratios are compared with observed data.
RSGs can retain traces of their main-sequence evolution.
Abstract
We review the significant role played by red supergiants (RSGs) in stellar populations, and some challenges and questions they raise for theoretical stellar evolution. We present how metallicity and rotation modify the way stars go to the red part of the Hertzsprung- Russell diagram or come back from it, and how RSGs might keep a trace of their main-sequence evolution. We compare theoretical popu- lation ratios with observed ones.
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