# The ‘red supergiant problem’: the upper luminosity boundary of Type II supernova progenitors

@article{Davies2020TheS,
title={The ‘red supergiant problem’: the upper luminosity boundary of Type II supernova progenitors},
author={Ben Davies and Emma R. Beasor},
journal={Monthly Notices of the Royal Astronomical Society},
year={2020},
volume={493},
pages={468-476}
}
• Published 16 January 2020
• Physics
• Monthly Notices of the Royal Astronomical Society
By comparing the properties of red supergiant (RSG) supernova (SN) progenitors to those of field RSGs, it has been claimed that there is an absence of progenitors with luminosities L above log (L/L⊙) > 5.2. This is in tension with the empirical upper luminosity limit of RSGs at log (L/L⊙) = 5.5, a result known as the ‘RSG problem’. This has been interpreted as an evidence for an upper mass threshold for the formation of black holes. In this paper, we compare the observed luminosities of RSG SN…
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