SIMBAD references

2018MNRAS.475...55B - Mon. Not. R. Astron. Soc., 475, 55-62 (2018/March-3)

The evolution of red supergiant mass-loss rates.

BEASOR E.R. and DAVIES B.

Abstract (from CDS):

The fate of massive stars with initial masses >8 M depends largely on the mass-loss rate ({dot}M) in the end stages of their lives. Red supergiants (RSGs) are the direct progenitors to Type II-P core collapse supernovae (SNe), but there is uncertainty regarding the scale and impact of any mass-loss during this phase. Here, we used near and mid-IR photometry and the radiative transfer code DUSTY to determine luminosity and {dot}M values for the RSGs in two Galactic clusters (NGC 7419 and χ Per) where the RSGs are all of similar initial mass (Minitial ∼ 16 M), allowing us to study how {dot}M changes with time along an evolutionary sequence. We find a clear, tight correlation between luminosity and {dot}M suggesting the scatter seen in studies of field stars is caused by stars of similar luminosity being of different initial masses. From our results, we estimate how much mass a 16 M star would lose during the RSG phase, finding a star of this mass would lose a total of 0.61+0.92–0.31 M. This is much less than expected for {dot}M prescriptions currently used in evolutionary models.

Abstract Copyright: © 2017 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: evolution - stars: massive - stars: mass-loss - supergiants

Simbad objects: 20

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2019.09.22-15:16:35

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