The ages of 55 globular clusters as determined using an improved method along with color-magnitude diagram constraints, and their implications for broader issues

VandenBerg, Don A.; Brogaard, Karsten; Leaman, R.; Casagrande, Luca

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The ages of 55 globular clusters as determined using an improved method along with color-magnitude diagram constraints, and their implications for broader issues

Date

2013

Authors

VandenBerg, Don A.

Brogaard, Karsten

Leaman, R.

Casagrande, Luca

Publisher

IOP Publishing

Abstract

Ages have been derived for 55 globular clusters (GCs) for which Hubble Space Telescope Advanced Camera for Surveys photometry is publicly available. For most of them, the assumed distances are based on fits of theoretical zero-age horizontal-branch (ZAHB)