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Hot Populations in M87 Globular Clusters

  • Authors: Sangmo T. Sohn, Robert W. O'Connell, Arunav Kundu, Wayne B. Landsman, David Burstein, Ralph C. Bohlin, Jay A. Frogel, and James A. Rose

Sohn et al. 2006 The Astronomical Journal 131 866.

  • Provider: AAS Journals

Caption: Fig. 4.

﹩( \mathrm{FUV}\,-V,\ M_{V}) _{0}﹩ and ﹩( \mathrm{FUV}\,-V,\ M_{\mathrm{FUV}\,}) _{0}﹩ CMDs for M87 clusters (circles) and Milky Way GCs (triangles). The two brightest Milky Way GCs in the far‐UV, ω Cen and M54, are labeled. They are comparable in V‐band luminosity to the brightest M87 clusters but have redder UV‐optical colors than many M87 objects. The bluest M31 GCs in the GALEX sample of Rey et al. (2005) coincide with the blue limit for Milky Way clusters in this diagram at ﹩( \mathrm{FUV}\,-V) _{0}\sim 1.2﹩. Many M87 clusters lie blueward of this limit. Note that 47 Tuc, which has ﹩M_{V}=-9.42﹩, ﹩M_{\mathrm{FUV}\,}=-4.78﹩, and ﹩( \mathrm{FUV}\,-V) _{0}=4.64﹩, lies off this plot.

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