Age and metallicity of the bulges in lenticular galaxies
Abstract
Panoramic spectroscopy of the sample of 80 nearby lenticular galaxies is presented. The SSP-equivalent ages, [Z/H], and [Mg/Fe] are determined through the Lick indices Hβ, Mgb, and <Fe> separately for the nuclei and for the bulges. About a half of the sample contain chemically distinct nuclei, more metal-rich and younger than the bulges. The statistics of stellar population properties for the nearby S0s is discussed.
- Publication:
-
Formation and Evolution of Galaxy Bulges
- Pub Date:
- July 2008
- DOI:
- arXiv:
- arXiv:0709.2928
- Bibcode:
- 2008IAUS..245..277S
- Keywords:
-
- galaxies: elliptical and lenticular;
- cD;
- galaxies: bulges;
- galaxies: evolution;
- Astrophysics
- E-Print:
- 5 pages, 2 figures. To appear in the Proceedings of the IAU Symposium 245, "Formation and Evolution of Galaxy Bulges", held at Oxford, U.K., July 2007, Eds. M. Bureau, E. Athanassoula, B. Barbuy