The ACS Survey of Galactic Globular Clusters: Absolute Ages

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

The ACS Survey of Galactic globular clusters is a Hubble Space Telescope Treasury program which has obtained deep, high quality photometry of 65 clusters. The absolute ages of a sample of clusters which have low reddening and well determined chemical compositions have been determined. A Monte Carlo set of theoretical isochrones has been generated and used to determine the absolute ages. These isochrones take into account the potential uncertainty associated with stellar evolution models and isochrones, and quantify the error associated with the age determination
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