Stellar populations of early-type galaxies in the ATLAS3D sample

Bibcode
2009AIPC.1111..111S
DOI
10.1063/1.3141526
Serra, P.; McDermid, R. M.; Alatalo, K.; Blitz, L.; Bois, M.; Bournaud, F.; Bureau, M.; Cappellari, M.; Davies, R. L.; Davis, T. A.; de Zeeuw, P. T.; Emsellem, E.; Falcón-Barroso, J.; Khochfar, S.; Krajnović, D.; Kuntschner, H.; Lablanche, P.-Y.; Morganti, R.; Naab, T.; Sarzi, M.; Scott, N.; van den Bosch, R. C. E.; van de Ven, G.; Weijmans, A.; Young, L. M.
Bibliographical reference

PROBING STELLAR POPULATIONS OUT TO THE DISTANT UNIVERSE: CEFALU 2008, Proceedings of the International Conference. AIP Conference Proceedings, Volume 1111, pp. 111-114 (2009).

Advertised on:
5
2009
Number of authors
25
IAC number of authors
0
Citations
6
Refereed citations
5
Description
ATLAS3D is a multi-wavelength, volume-limited survey of 263 morphologically-selected 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 ATLAS3D sample based on SAURON integral-field spectroscopy. We show relations between integrated line-strength indices and stellar velocity dispersion σ 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.
Type
Non-refereed
Star formation

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