Stellar populations of early-type galaxies in the ATLAS3D sample

P. Serra*, R. M. McDermid, K. Alatalo, L. Blitz, M. Bois, F. Bournaud, M. Bureau, M. Cappellari, R. L. Davies, T. A. Davis, P. T. De Zeeuw, E. Emsellem, J. Falcón-Barroso, S. Khochfar, D. Krajnović, H. Kuntschner, P. Y. Lablanche, R. Morganti, T. Naab, M. SarziN. Scott, R. C E Van Den Bosch, G. Van De Ven, A. Weijmans, L. M. Young

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review


ATLAS3D is a multi-wavelength, volume-limited survey of 263 morphologicallyselected early-type galaxies within a distance of 42 Mpc and complete to MK ≤ -21.5. Here we present the ATLAS3D project and our first results on the stellar populations of galaxies in the ATLAS3Dsample based on SAURON integral-field spectroscopy. We show relations between integrated line-strength indices and stellar velocity dispersion o in the range 55 ≤ Σ(km/s) ≤ 350. We derive simple-stellar-population-equivalent age, metallicity and α/Fe abundance ratio and discuss their relation to stellar velocity dispersion, environment and galaxy internal kinematics. These preliminary results indicate that slow rotators tend to be older and have less variation in age than fast rotators. We also find that galaxies in lower density environments are on average younger than those in denser environments, as found by other authors.

Original languageEnglish
Title of host publicationProbing Stellar Populations Out To The Distant Universe - Cefalu 2008 - Proceedings of the International Conference
EditorsGiuliana Giobbi, Amedeo Tornambe, Gabriella Raimondo, Marco Limongi, L. A. Antonelli, Nicola Menci, Enzo Brocato
Place of PublicationNew York
Number of pages4
Publication statusPublished - 2009
Externally publishedYes
EventInternational Conference on Probing Stellar Populations Out To The Distant Universe, Cefalu 2008 - Cefalu, Sicily, Italy
Duration: 7 Sept 200819 Sept 2008


OtherInternational Conference on Probing Stellar Populations Out To The Distant Universe, Cefalu 2008
CityCefalu, Sicily


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