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Red Galaxies from Hot Halos in Cosmological Hydro Simulations

Published online by Cambridge University Press:  17 July 2013

Jared Gabor
Jared Gabor*
Affiliation:
CEA Saclay Bat. 709, Gif-sur-Yvette, 91191France email: jared.gabor@cea.fr
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Abstract

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I highlight three results from cosmological hydrodynamic simulations that yield a realistic red sequence of galaxies: 1) Major galaxy mergers are not responsible for shutting off star-formation and forming the red sequence. Starvation in hot halos is. 2) Massive galaxies grow substantially (~ × 2 in mass) after being quenched, primarily via minor (1:5) mergers. 3) Hot halo quenching naturally explains why galaxies are red when they either (a) are massive or (b) live in dense environments.

Keywords

galaxies: evolutiongalaxies: interactions
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S295: The intriguing life of massive galaxies , August 2012 , pp. 350 - 353
Copyright
Copyright © International Astronomical Union 2013 

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