Figure 10 from The ACS Survey of Galactic Globular Clusters. VII. Relative Ages

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The ACS Survey of Galactic Globular Clusters. VII. Relative Ages

Authors: Antonio MarÍn-Franch, Antonio Aparicio, Giampaolo Piotto, Alfred Rosenberg, Brian Chaboyer, Ata Sarajedini, Michael Siegel, Jay Anderson, Luigi R. Bedin, Aaron Dotter, Maren Hempel, Ivan King, Steven Majewski, Antonino P. Milone, Nathaniel Paust, and I. Neill Reid

MARÍN-FRANCH et al. 2009 The Astrophysical Journal 694 1498.

Provider: AAS Journals

Caption: Figure 10.

Globular cluster normalized ages as a function of [M/H] in the CG-metallicity scale (upper panel), and as a function of galactocentric distance ( r _GC kpc, lower panel). These results have been derived using the D07 stellar evolution library. Open circles, filled triangles, and filled circles represent GCs within the low-, intermediate-, and high-metallicity groups, respectively. For each of the three metallicity groups, mean age and rms are indicated. See text for details.

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