| Issue |
EAS Publications Series
Volume 48, 2011
CRAL-2010 A Universe of Dwarf Galaxies
|
|
|---|---|---|
| Page(s) | 237 - 241 | |
| Section | Globular Clusters, UCDs, cEs | |
| DOI | https://doi.org/10.1051/eas/1148053 | |
| Published online | 11 July 2011 | |
M. Koleva, Ph. Prugniel and I. Vauglin (eds)
EAS Publications Series, 48 (2011) 237–241
Observational Properties of Globular Clusters in Dwarf Galaxies
1 Special Astrophysical Observatory, Russian Academy of Sciences, N.Arkhyz, KChR, 369167, Russia
2 Laboratoire d’Astrophysique de Toulouse-Tarbes, Université de Toulouse, CNRS, 14 avenue E. Belin, 31400 Toulouse, France
3 Department of Physics and Astronomy, The University of Toledo, 2801 West Bancroft Street, Toledo
4 Herzberg Institute of Astrophysics, 5071 West Saanich Road, Victoria, BC
5 Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
6 Laboratoire d’Astrophysique de Toulouse-Tarbes, Université de Toulouse, CNRS, 14 avenue E. Belin, 31400, Toulouse, France
We analyse evolutionary parameters of globular clusters in dwarf galaxies obtained in our medium-resolution spectroscopic observations, and their connection with the properties of the host galaxies. We find that 1) the metallicity spread in globular cluster systems is wider for larger galaxies; 2) metal-rich clusters are young and preferentially found in galaxies more massive than ∼109M⊙; 3) intermediate-age globular clusters in early-type dwarf galaxies are richer in metals than star clusters representing dynamically cold gas-rich environments in dwarf irregulars; 4) the age-metallicity relation is special for each galaxy, and depends not only on its mass, but also on some other factors, probably environmental conditions.
© EAS, EDP Sciences, 2011