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Bimodality is a common feature of globular cluster (GC) color distributionsin galaxies. Although it is well known that the GC system of the Milky Way isbimodal in metallicity, this has yet to be directly demonstrated for anelliptical galaxy. We use Lick index measurements from the literature to derivemetallicities for 47 GCs in the giant Virgo elliptical galaxy NGC 4472. Theresulting distribution shows clear evidence for two metallicity subpopulationsof GCs.Comment: Accepted to AJ, 16 pages, 5 figure

Globular Cluster Metallicity Subpopulations in NGC 4472