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astro-ph.SR2022
Spectroscopic Confirmation of Two Luminous Post-AGB Stars in the Globular Cluster M19
Howard E. Bond, Jacob E. Jencson, Robin Ciardullo +2
The visually brightest stars in globular clusters (GCs) are the ones evolving off the asymptotic giant branch (AGB) and passing through spectral types F and A--the "yellow" post-AG…
astro-ph.SR2022
Yellow Post-Asymptotic-Giant-Branch Stars as Standard Candles. I. Calibration of the Luminosity Function in Galactic Globular Clusters
Robin Ciardullo, Howard E. Bond, Brian D. Davis +1
We use results of a survey for low-surface-gravity stars in Galactic (and LMC) globular clusters to show that "yellow" post-asymptotic-giant-branch (yPAGB) stars are likely to be e…