Hertzsprung-Russel diagram for the cool supergiants in Westerlund 1
Date
Hertzsprung-Russel diagram for the cool supergiants in Westerlund 1. The red supergiants (red circles) and yellow supergiants (yellow boxes) are plotted along with stellar isochrones (black curves). The supergiant luminosities are clearly inconsistent with the previous age estimate of 5 Myr. Instead, they appear to be an older population consistent with an age of 10 Myr.
Credit
Beasor et al. 2021
Image Number
SCI2021_016
