Figure 2 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.

Caption: Figure 2.

Examples of mean ridge line fitting in four selected clusters covering the metallicity range. The MSTO position is marked with an open circle.