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

Eric Emsellem; Michele Cappellari; Davor Krajnovic; Glenn van de Ven; R. Bacon; M. Bureau; Roger L. Davies; P. T. de Zeeuw; Jesus Falcon-Barroso; Harald Kuntschner; Richard McDermid; Reynier F. Peletier; Marc Sarzi; Remco C. E. van den Bosch

doi:10.1017/s1743921308017158

arXiv · 0709.3964

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

Eric Emsellem·Michele Cappellari·Davor Krajnovic·Glenn van de Ven·R. Bacon·M. Bureau·Roger L. Davies·P. T. de Zeeuw·Jesus Falcon-Barroso·Harald Kuntschner·Richard McDermid·Reynier F. Peletier·Marc Sarzi·Remco C. E. van den Bosch

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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.

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Eric Emsellem, Michele Cappellari, Davor Krajnovic, Glenn van de Ven, R. Bacon, M. Bureau, Roger L. Davies, P. T. de Zeeuw, Jesus Falcon-Barroso, Harald Kuntschner, Richard McDermid, Reynier F. Peletier, Marc Sarzi, Remco C. E. van den Bosch. 2007-09-25. Fast and Slow Rotators: The build-up of the Red Sequence. https://doi.org/10.1017/s1743921308017158

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