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Ages of the Galactic Globular Clusters

Published online by Cambridge University Press:  19 July 2016

Don A. Vandenberg
Don A. Vandenberg*
Affiliation:
University of Victoria

Abstract

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Using stellar evolutionary models which have been computed for the preferred set of element abundances, ages of 13-14 Gyr are derived for the Galactic globular clusters. No significant (> 1.5 Gyr) spread in age is found as a function of either metal content or galactocentric distance. The lack of an age-metallicity relation is shown to be contingent upon the assumption that [O/Fe] is anticorrelated with [Fe/H]: the use of scaled solar abundance calculations would predict that the most metal-poor systems are about 3 × 109 yr older than the most metal-rich clusters. Some evidence in support of high oxygen-to-iron ratios is discussed.

Type
Chapter II. Review Papers on Globular Clusters in the Milky Way
Information
Symposium - International Astronomical Union , Volume 126: The Harlow-Shapley Symposium on Globular Cluster Systems in Galaxies , 1988 , pp. 107 - 120
Copyright
Copyright © Kluwer 1988 

References

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