The Origin of UCDs in the Virgo Cluster

Details The Origin of UCDs in the Virgo Cluster The Origin of UCDs in the Virgo Cluster

2005-04-13

arxiv.org/abs/astro-ph/0504289v1

Astronomy and Astrophysics

Astrophysics

3 pages, 3 figures. To be published in the Proceedings IAUC198, 2005

Scientific paper

We present the internal velocity dispersions and spectral line indices for six Virgo ultra-compact dwarf (UCD) galaxies obtained from spectroscopy with the Keck II 10-m telescope. We use these results: 1) to compare the Virgo UCDs with the Fornax UCD population; 2) to compare UCDs with globular clusters (GCs) to determine if UCDs and the most luminous GCs are the same or distinct systems; 3) to further test the nucleated dwarf elliptical (dE,N) stripping hypothesis for UCD formation.

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