Fig. 14
Theoretical single stellar population models from Marigo et al. (2008) for five different metallicities. Overplotted (in arbitrary units) is a Gaussian representing the color distribution for GC candidates between 2 and 10 arcmin radius. If the cluster sample within 1.3 < C − R < 1.6 is dominated by objects with at least solar metallicity, many clusters are younger than 2 Gyr.
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