The Origin of UCDs in the Virgo Cluster

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

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Astrophysics

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http://salesiana.dossiersoluciones.com/handle/123456789/9176

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/astro-ph/0504289
 http://arxiv.org/abs/astro-ph/0504289

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arXiv