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arXiv · 1210.4943

Red Galaxies from Hot Halos in Cosmological Hydro Simulations

Jared Gabor
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Abstract

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 (about a factor of 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.

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Jared Gabor. 2012-10-17. Red Galaxies from Hot Halos in Cosmological Hydro Simulations. https://doi.org/10.1017/s1743921313005346

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