RED SUPERGIANTS IN THE ANDROMEDA GALAXY (M31)

@article{Massey2009REDSI,
  title={RED SUPERGIANTS IN THE ANDROMEDA GALAXY (M31)},
  author={Philip Massey and D. R. Silva and Emily M. Levesque and Bertrand Plez and Knut A. G. Olsen and Geoffrey C. Clayton and Georges Meynet and Andre Maeder},
  journal={The Astrophysical Journal},
  year={2009},
  volume={703},
  pages={420 - 440}
}
Red supergiants (RSGs) are a short-lived stage in the evolution of moderately massive stars (10–25 M☉), and as such their location in the H-R diagram provides an exacting test of stellar evolutionary models. Since massive star evolution is strongly affected by the amount of mass loss a star suffers, and since the mass-loss rates depend upon metallicity, it is highly desirable to study the physical properties of these stars in galaxies of various metallicities. Here we identify a sample of RSGs… 

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