Age and metallicity of the bulges in lenticular galaxies

Details Age and metallicity of the bulges in lenticular galaxies Age and metallicity of the bulges in lenticular galaxies

2007-09-18

arxiv.org/abs/0709.2928v1

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures. To appear in the Proceedings of the IAU Symposium 245, "Formation and Evolution of Galaxy Bulges", held at

Scientific paper

10.1017/S1743921308017900

Panoramic spectroscopic data of the sample of 80 nearby lenticular galaxies obtained with the Multi-Pupil Fiber Spectrograph of the 6-m telescope are presented. The SSP-equivalent ages, [Z/H], and [Mg/Fe] are determined through the Lick indices H-beta, Mgb, and 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 correlations of the stellar population properties for the nearby S0s are discussed.

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