Fast and Slow Rotators: The build-up of the Red Sequence - AstrophysicsReport as inadecuate

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Abstract: Using the unique dataset obtained within the course of the SAURON project, aradically new view of the structure, dynamics and stellar populations ofearly-type galaxies has emerged. We show that galaxies come in two broadflavours slow and fast rotators, depending on whether or not they exhibitclear large-scale rotation, as indicated via a robust measure of the specificangular momentum of baryons. This property is also linked with other physicalcharacteristics of early-type galaxies, such as: the presence of dynamicallydecoupled cores, orbital structure and anisotropy, stellar populations and darkmatter content. I here report on the observed link between this baryonicangular momentum and a mass sequence, and how this uniquely relates to thebuilding of the red sequence via dissipative-dissipationless mergers andsecular evolution.

Author: Eric Emsellem, Michele Cappellari, Davor Krajnovic, Glenn van de Ven, R. Bacon, M. Bureau, Roger L. Davies, P. T. de Zeeuw, Jesus


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