351 citations · 6.5k across the 167 of their papers we have counts for
16 papers · 1 filter
Population II Post-AGB Stars. I. Methodology, Initial Results, and the First Luminosity Function
S. Jean Feeser, Robin Ciardullo, Michael H. Siegel +2
Post-asymptotic giant branch (PAGB) stars share many advantages with the tip of the red giant branch (TRGB) for Population II distance measurements, including minimal internal redd…
Spectroscopic Survey of Faint Planetary-Nebula Nuclei. V. The EGB 6-Type Central Star of Abell 57
Howard E. Bond, Akshat S. Chaturvedi, Robin Ciardullo +3
During our spectroscopic survey of central stars of faint planetary nebulae (PNe), we found that the nucleus of Abell 57 exhibits strong nebular emission lines. Using synthetic nar…
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…
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…
A Census of Above-Horizontal-Branch Stars in Galactic Globular Clusters
Brian D. Davis, Howard E. Bond, Michael H. Siegel +1
We have carried out a search for above-horizontal-branch (AHB) stars--objects lying above the horizontal branch (HB) and blueward of the asymptotic giant branch (AGB) in the color-…
The RR Lyrae Delay-Time Distribution: A Novel Perspective on Models of Old Stellar Populations
Sumit K. Sarbadhicary, Mairead Heiger, Carles Badenes +6
The delay-time distribution (DTD) is the occurrence rate of a class of objects as a function of time after a hypothetical burst of star formation. DTDs are mainly used as a statist…