Horizontal Branch Morphology and the 2nd Parameter Problem
Astrophysics
2007-05-23 v1
Abstract
We review the most outstanding issues related to the study of the morphology of the Horizontal Branch (HB) in the Color-Magnitude Diagrams of Galactic Globular Clusters and its use as age indicator. It is definitely demonstrated (see also Bolte, this meeting) that age cannot be the only 2nd-P driving the HB morphology. Other candidate 2nd-Ps are briefly examined, with special attention to the possible influence of cluster stellar density.
Keywords
Cite
@article{arxiv.astro-ph/9606108,
title = {Horizontal Branch Morphology and the 2nd Parameter Problem},
author = {F. Fusi Pecci and M. Bellazzini and F. R. Ferraro and R. Buonanno and C. Corsi},
journal= {arXiv preprint arXiv:astro-ph/9606108},
year = {2007}
}
Comments
10 pages, Latex, 4 encapsulated postscript figures, ASP Conf. macros included - review presented at the Meeting "The Galactic Halo Inside and Out", Tucson, october 1995, ASPCS vol. 92, pag. 221