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UCDs in Fornax and Abell 1689

Published online by Cambridge University Press:  08 November 2005

S. Mieske ,
M. Hilker  and
L. Infante
S. Mieske
Affiliation:
Sternwarte der Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany email: smieske@astro.uni-bonn.de, mhilker@astro.uni-bonn.de
M. Hilker
Affiliation:
Sternwarte der Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany email: smieske@astro.uni-bonn.de, mhilker@astro.uni-bonn.de
L. Infante
Affiliation:
Departamento de Astronomía y Astrofísica, P. Universidad Católica, Casilla 104, Santiago 22, Chile email: linfante@astro.puc.cl
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Abstract

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We review some properties of ultra compact dwarf galaxies (UCDs) in Fornax and of their brighter counterparts in Abell 1689, among which are two M32 twins, and discuss various possible UCD formation scenarios. We note that it is indispensable to carefully take into account the bright end of the globular cluster luminosity function when estimating the number density of UCDs. It is suggested that the search for more luminous UCDs in dense and rich galaxy clusters is the best way towards establishing UCDs as a new class of galaxies.

Keywords

Galaxies: nucleistar clustersformationpeculiar
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Colloquium C198: Near-Field Cosmology with Dwarf Elliptical Galaxies , March 2005 , pp. 404 - 408
Copyright
© 2005 International Astronomical Union