Astro-seminar , Wednesday 30/Mar/2011 , at 14:00 in Holcblat.

Speaker: Dr. Shy Genel, TAU
Title: Dark Matter Halos and z~2 Galaxies: Mergers, Smooth Accretion, and Feedback

Abstract:
In the LCDM model, both dark matter halos and galaxies form hierarchically by mergers but grow also via direct accretion of "smooth" material. First, I will describe these different growth modes of dark matter halos as inferred from large cosmological N-body simulations. Then I will present observations of rapidly star-forming and turbulent galaxy disks at z~2, and discuss high-resolution, "zoom-in", cosmological hydrodynamical simulations that reproduce many of their properties.