VICS: Intergalactic Globular Clusters in Virgo
Deep HST ACS images of Virgo from the VICS project (Ciardullo et al.) contain 4 resolved objects that appear to be intergalactic globular clusters (IGCs). Evidence for this interpretation comes from the objects' integrated colors and magnitudes, which are consistent with those of Virgo globulars, their radial surface brightness profiles, which are
Williams, B. F. et al.
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2005