8 papers
Spin Profile of Galactic Halos and Disk Formation
A. Dekel, J. S. Bullock, C. Porciani +4
We summarize recent developments in the study of the origin of halo spin profiles and preliminary implications on disk formation. The specific angular-momentum distributions within…
Origin and Destiny of Dark Matter Halos: Cosmological Matter Exchange and Metal Enrichment
Tsafrir S. Kolatt, James S. Bullock, Avishai Dekel +4
[Abridged] We analyze the exchange of dark matter between halos, subhalos, and their environments in a high-resolution cosmological N-body simulation of a Lambda CDM cosmology. At…
Interaction rates of dark-matter halos and subhalos
Tsafrir S. Kolatt, James S. Bullock, Yair Sigad +4
[Abridged] The interaction rates of dark-matter halos and subhalos, are computed using high-resolution cosmological N-body simulations of the Lambda-CDM model. Although the number…
Velocity and Mass Functions of Galactic Halos: Evolution and Environmental Dependence
Yair Sigad, Tsafrir S. Kolatt, James S. Bullock +4
We study the distribution functions of mass and circular velocity for dark matter halos in N-body simulations of the CDM cosmology, addressing redshift and environmental depende…
Clustering of high-redshift galaxies: relating LBGs to dark matter halos
Risa H. Wechsler, James S. Bullock, Rachel S. Somerville +4
We investigate the clustering properties of high-redshift galaxies within three competing scenarios for assigning luminous galaxies to dark matter halos from N-body simulations: a…
Galaxy Interactions and Starbursts at High Redshift
R. S. Somerville, G. Rosenfeld, T. S. Kolatt +3
Using high resolution N-body simulations with hydrodynamics and star formation, we investigate interactions and the resulting starbursts in galaxies with properties typical of $z\s…