| Issue |
EAS Publications Series
Volume 48, 2011
CRAL-2010 A Universe of Dwarf Galaxies
|
|
|---|---|---|
| Page(s) | 85 - 86 | |
| Section | Star Formation History and Chemical Enrichment | |
| DOI | https://doi.org/10.1051/eas/1148020 | |
| Published online | 11 July 2011 | |
M. Koleva, Ph. Prugniel and I. Vauglin (eds)
EAS Publications Series, 48 (2011) 85–86
Spectroscopic Ages and Metallicities of Galaxies
1 IAC, La Laguna and Dept. de Astrofísica, Univ. de La Laguna, 38200 Tenerife, Spain
2 Université Lyon 1, Villeurbanne, CRAL, Observatoire de Lyon, CNRS, UMR 5574, France
3 Dept. de Astrofísica y CC. de la Atmósfera, Univ. Complutense de Madrid, 28040 Madrid, Spain
4 Dept. of Physics & Astronomy, Ghent University, Krijgslaan 281, S9, 9000, Belgium
5 Institut für Astronomie, Universität Wien, Türkenschanzstrasse 17, 1180 Wien, Austria
Dwarf galaxies are generally faint. To derive their age and metallicity distributions, it is critical to optimize the use of any collected photon. Koleva et al., using full spectrum fitting, have found strong population gradients in some dwarf elliptical galaxies. Here, we show that the population profiles derived with this method are consistent and more precise with those obtained with spectrophotometric indices. This allows studying fainter objects in less telescope time.
© EAS, EDP Sciences, 2011