Stellar populations of early-type galaxies in the ATLAS3Dsample

被引：0

作者：

Serra, P. ^{[1
]}

McDermid, R. M. ^{[1
]}

Alatalo, K. ^{[1
]}

Blitz, L. ^{[1
]}

Bois, M. ^{[1
]}

Bournaud, F. ^{[1
]}

Bureau, M. ^{[1
]}

Cappellari, M. ^{[1
]}

Davies, R. L. ^{[1
]}

Davis, T. A. ^{[1
]}

de Zeeuw, P. T. ^{[1
]}

Emsellem, E. ^{[1
]}

Falcon-Barroso, J. ^{[1
]}

Khochfar, S. ^{[1
]}

Krajnovic, D. ^{[1
]}

Kuntschner, H. ^{[1
]}

Lablanche, P. -Y. ^{[1
]}

Morganti, R. ^{[1
]}

Naab, T. ^{[1
]}

Sarzi, A. ^{[1
]}

Scott, N. ^{[1
]}

van den Bosch, R. C. E. ^{[1
]}

van de Ven, G. ^{[1
]}

Weijmans, A. ^{[1
]}

Young, L. M. ^{[1
]}

机构：

[1] Netherlands Fdn Res Astron ASTRON, Postbus 2, NL-7990 AA Dwingeloo, Netherlands

来源：

PROBING STELLAR POPULATIONS OUT TO THE DISTANT UNIVERSE | 2009年 / 1111卷

关键词：

Early-type galaxies; SAURON PROJECT; MASS FUNCTIONS; LUMINOSITY; EVOLUTION;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

ATLAS(3D) is a multi-wavelength, volume-limited survey of 263 morphologically-selected early-type galaxies within a distance of 42 Mpc and complete to M-K <= -21.5. Here we present the ATLAS(3D) project and our first results on the stellar populations of galaxies in the ATLAS(3D) sample based on SAURON integral-field spectroscopy. We show relations between integrated line-strength indices and stellar velocity dispersion sigma in the range 55 <= sigma(km/s) <= 350. We derive simple-stellar-population-equivalent age, metallicity and alpha/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.

引用

页码：111 / +

页数：2

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