Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-25T18:07:29.318Z Has data issue: false hasContentIssue false
  • English
  • Français

A Census of Ultra-Compact Dwarf Galaxies in Nearby Galaxy Clusters

Published online by Cambridge University Press:  11 July 2011

M. Koleva ,
Ph. Prugniel ,
I. Vauglin  and
M. Hilker
M. Hilker*
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching b. München, Germany
*
e-mail: [email protected]
Get access

Abstract

Ultra-compact dwarf galaxies (UCDs) are predominatly found in the cores of nearby galaxy clusters. Besides the Fornax and Virgo cluster, UCDs have also been confirmed in the twice as distant Hydra I and Centaurus clusters. Having (nearly) complete samples of UCDs in some of these clusters allows the study of the bulk properties with respect to the environment they are living in. Moreover, the relation of UCDs to other stellar systems in galaxy clusters, like globular clusters and dwarf ellipticals, can be investigated in detail with the present data sets. The general finding is that UCDs seem to be a heterogenous class of objects. Their spatial distribution within the clusters is in between those of globular clusters and dwarf ellipticals. In the colour-magnitude diagram, blue/metal-poor UCDs coincide with the sequence of nuclear star clusters, whereas red/metal-rich UCDs reach to higher masses and might have originated from the amalgamation of massive star cluster complexes in merger or starburst galaxies.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 48: CRAL-2010 A Universe of Dwarf Galaxies , 2011 , pp. 219 - 224
Copyright
© EAS, EDP Sciences, 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bekki, K., Couch, W.J., & Drinkwater, M.J., 2001, ApJ, 552, L105CrossRef
Côté, P., Piatek, S., Ferrarese, L., et al, 2006, ApJS, 165, 57CrossRef
Dabringhausen, J., Hilker, M., & Kroupa, P., 2008, MNRAS, 386, 864CrossRef
Drinkwater, M.J., Jones, J.B., Gregg, M.D., & Phillipps, S., 2000, PASA, 17, 227CrossRef
Fellhauer, M., & Kroupa, P., 2002, MNRAS, 330, 642CrossRef
Harris, W.E., 2009, ApJ, 699, 254CrossRef
Hasegan, M., Jordán, A., Côté, P., et al, 2005, ApJ, 627, 203CrossRef
Hilker, M., 2009, in “Globular Clusters – Guides to Galaxies”, ed. Richtler, T. & Larsen, S., ESO Astrophysics Symposia (Springer), 51Google Scholar
Hilker, M., Infante, L., Vieira, G., Kissler-Patig, M., & Richtler, T., 1999, A&AS, 134, 75
Jones, J.B., Drinkwater, M.J., Jurek, R., et al, 2006, AJ, 131, 312CrossRef
Jordán, A., Peng, E.W., Blakeslee, J.P., et al, 2009, ApJS, 180, 54CrossRef
Lotz, J.M., Miller, B.W., & Ferguson, H.C., 2004, ApJ, 613, 262CrossRef
Mieske, S., Hilker, M., & Infante, L., 2002, A&A, 383, 823
Mieske, S., Hilker, M., Infante, L., & Mendes de Oliveira, C., 2007, A&A, 463, 503
Mieske, S., Hilker, M., Jordán, A., et al, 2008, A&A, 487, 921
Mieske, S., & Kroupa, P., 2008, ApJ, 677, 276CrossRef
Misgeld, I., Mieske, S., & Hilker, M., 2008, A&A, 486, 697
Misgeld, I., Hilker, M., & Mieske, S., 2009, A&A, 496, 683
Peng, E.W., Jordán, A., Côté, P., et al, 2006, ApJ, 639, 95CrossRef
Phillipps, S., Drinkwater, M.J., Gregg, M.D., & Jones, J.B., 2001, ApJ, 560, 201CrossRef
Schuberth, Y., Richtler, T., Hilker, M., et al, 2010, A&A, 513, 52