Journal ArticleDOI
Metal-poor stars. III - On the evolution of horizontal-branch stars
Icko Iben,Robert T. Rood +1 more
TLDR
Horizontal branch stars evolution based on mass distributions from comparison with giant branch, investigating evolutionary track characteristics during core helium burning was studied in this paper, where the authors proposed a model of the evolution of horizontal branch stars.Abstract:
Horizontal branch stars evolution based on mass distributions from comparison with giant branch, investigating evolutionary track characteristics during core helium burningread more
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Journal ArticleDOI
RR Lyrae-based Distances for 39 Nearby Dwarf Galaxies Calibrated to Gaia eDR3
TL;DR: In this article , the authors provide uniform RR Lyrae-based distances to 39 dwarf galaxies in and around the Local Group, based on a Bayesian hierarchical model that uses periods and magnitudes of published RR-Lyrae in dwarf galaxies.
Journal ArticleDOI
Comparison of the Asteroseismic Mass Scale of Red Clump Giants with Photometric Mass Estimates
TL;DR: In this article, the authors used a number of widely used horizontal-branch (HB) models in the literature, and derived photometric masses from a comparison with $griBVI_CJHK_s$ photometry.
Journal ArticleDOI
Evolution of the M31 Disk Population
TL;DR: In this paper, an evolutionary model for the M31 inner disk population is described, which at age 12 billion years agrees closely with the narrow-band colors and line indices recently measured by Spinradet et al.
Journal ArticleDOI
The structure of late type stars and the Hayashi track
TL;DR: In this article, a topological approach in the HR diagram is given for the occurrence and the characteristics of convective envelopes in population II stars, where the location of the Hayashi track and of the Red Giants branch are both investigated for various assumed masses of the stars and chemical compositions of the convective layers.
Journal ArticleDOI
Multiple Stellar Populations along the Red Horizontal Branch and Red Clump of Globular Clusters
E. Dondoglio,Antonino Milone,E. P. Lagioia,Anna F. Marino,M. Tailo,G. Cordoni,Sohee Jang,Sohee Jang,Marilia Carlos +8 more
TL;DR: In this paper, the authors exploit multi-band Hubble Space Telescope photometry to investigate multiple populations (MPs) along the red horizontal branches (HBs) and red clumps of fourteen metal-rich Globular Clusters (GCs), including twelve Milky Way GCs and the Magellanic Cloud GCs NGC 1978 and NGC 416.