Multiple populations in Galactic globular clusters: a survey in the Str\"omgren system
Abstract
We are coming to believe that stellar populations in globular clusters are not as simple as they were once thought to be. A growing amount of photometric and spectroscopic evidence shows that globular clusters host at least two different stellar populations. In our contribution to these proceedings we present the first results of a survey we are conducting to look for the presence of multiple populations in a significant number of Galactic globular clusters, using the Str\"omgren system. We intend to photometrically separate these populations and characterize their radial distributions and extensions.
Cite
@article{arxiv.1301.2772,
title = {Multiple populations in Galactic globular clusters: a survey in the Str\"omgren system},
author = {J. Alonso-García and M. Catelan and P. Amigo and C. Cortés and C. A. Kuehn and F. Grundahl and G. López and R. Salinas and H. A. Smith and P. B. Stetson and A. V. Sweigart and A. A. R. Valcarce and M. Zoccali},
journal= {arXiv preprint arXiv:1301.2772},
year = {2013}
}
Comments
4 pages, 2 figures. To appear in the proceedings of "Reading the book of globular clusters with the lens of stellar evolution", in the Memorie della Societa Astronomica Italiana