Towards a new classification of early-type galaxies: an integral-field view
Abstract
In this proceeding we make use of the two-dimensional stellar kinematics of a representative sample of E and S0 galaxies obtained with the SAURON integral-field spectrograph to reveal that early-type galaxies appear in two broad flavours, depending on whether they exhibit clear large-scale rotation or not. We measure the level of rotation via a new parameter LambdaR and use it as a basis for a new kinematic classification that separates early-type galaxies into slow and fast rotators. With the aid of broad-band imaging we will reinforce this finding by comparing our kinematic results to the photometric properties of these two classes.
Keywords
Cite
@article{arxiv.0709.0357,
title = {Towards a new classification of early-type galaxies: an integral-field view},
author = {J. Falcón-Barroso and R. Bacon and M. Cappellari and R. L. Davies and P. T. de Zeeuw and E. Emsellem and D. Krajnovic and H. Kuntschner and R. M. McDermid and R. F. Peletier and M. Sarzi and G. van de Ven},
journal= {arXiv preprint arXiv:0709.0357},
year = {2007}
}
Comments
4 pages, 2 figures, to appear in "Pathways Through an Eclectic Universe", J. H. Knappen, T. J. Mahoney, and A. Vazedekis (Eds.), ASP Conf. Ser., 2007