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Explore a 23-minute astronomy lecture from Lowell Observatory's Phil Massey examining the complete populations of red supergiants (RSGs) identified across the Local Group's star-forming galaxies. Discover how the relative numbers of RSGs and Wolf-Rayet stars correlate with metallicity when compared to BPASS binary population models, and gain insights into the time-averaged mass-loss rates of these massive stars through analysis of RSG luminosity functions. Learn about crucial developments in understanding massive star evolution through comprehensive population studies of these astronomical objects.
