Fast and Slow Rotators: The build-up of the Red Sequence
Abstract
Using the unique dataset obtained within the course of the SAURON project, a radically new view of the structure, dynamics and stellar populations of early-type galaxies has emerged. We show that galaxies come in two broad flavours (slow and fast rotators), depending on whether or not they exhibit clear large-scale rotation, as indicated via a robust measure of the specific angular momentum of baryons. This property is also linked with other physical characteristics of early-type galaxies, such as: the presence of dynamically decoupled cores, orbital structure and anisotropy, stellar populations and dark matter content. I here report on the observed link between this baryonic angular momentum and a mass sequence, and how this uniquely relates to the building of the red sequence via dissipative/dissipationless mergers and secular evolution.
Keywords
Cite
@article{arxiv.0709.3964,
title = {Fast and Slow Rotators: The build-up of the Red Sequence},
author = {Eric Emsellem and Michele Cappellari and Davor Krajnovic and Glenn van de Ven and R. Bacon and M. Bureau and Roger L. Davies and P. T. de Zeeuw and Jesus Falcon-Barroso and Harald Kuntschner and Richard McDermid and Reynier F. Peletier and Marc Sarzi and Remco C. E. van den Bosch},
journal= {arXiv preprint arXiv:0709.3964},
year = {2009}
}
Comments
4 pages, 1 figure. To appear in the Proceedings of IAU Symposium 245 "Formation and Evolution of Galaxy Bulges", Eds M. Bureau, E. Athanassoula, and B. Barbuy