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Halo Contraction Effect in Hydrodynamic Simulations of Galaxy Formation
Oleg Y. Gnedin, Daniel Ceverino, Nickolay Y. Gnedin +5
The condensation of gas and stars in the inner regions of dark matter halos leads to a more concentrated dark matter distribution. While this effect is based on simple gravitationa…
Rotational Support of Giant Clumps in High-z Disc Galaxies
Daniel Ceverino, Avishai Dekel, Nir Mandelker +4
We address the internal support against total free-fall collapse of the giant clumps that form by violent gravitational instability in high-z disc galaxies. Guidance is provided by…
Haloes gone MAD: The Halo-Finder Comparison Project
Alexander Knebe, Steffen R. Knollmann, Stuart I. Muldrew +34
[abridged] We present a detailed comparison of fundamental dark matter halo properties retrieved by a substantial number of different halo finders. These codes span a wide range of…
The specific star formation rate and stellar mass fraction of low-mass central galaxies in cosmological simulations
V. Avila-Reese, P. Colín, A. González-Samaniego +4
(Abridged) By means of high-resolution cosmological simulations in the context of the LCDM scenario, the specific star formation rate (SSFR=SFR/Ms, Ms is the stellar mass)--Ms and…
Absorption line systems in simulated galaxies fed by cold streams
Michele Fumagalli, J. Xavier Prochaska, Daniel Kasen +3
Hydro cosmological simulations reveal that massive galaxies at high redshift are fed by long narrow streams of merging galaxies and a smoother component of cold gas. We post-proces…