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Response of Dark Matter Halos to Condensation of Baryons: Cosmological Simulations and Improved Adiabatic Contraction Model
The cooling of gas in the centers of dark matter halos is expected to lead to a more concentrated dark matter distribution. The response of dark matter to the condensation of baryons is usuallyExpand
Destruction of the Galactic Globular Cluster System
We investigate the dynamical evolution of the Galactic globular cluster system in considerably greater detail than has been done hitherto, finding that destruction rates are significantly larger thanExpand
Cats and dogs, hair and a hero: A quintet of new milky way companions
We present five new satellites of the Milky Way discovered in Sloan Digital Sky Survey (SDSS) imaging data, four of which were followed-up with either the Subaru or the Isaac Newton Telescopes. TheyExpand
The Tumultuous Lives of Galactic Dwarfs and the Missing Satellites Problem
Hierarchical cold dark matter (CDM) models predict that Milky Way-sized halos contain several hundred dense low-mass dark matter satellites (the substructure), an order of magnitude more than theExpand
Velocity dispersion profiles of seven dwarf spheroidal galaxies
We present stellar velocity dispersion profiles for seven Milky Way dwarf spheroidal (dSph) satellite galaxies. We have measured 8394 line-of-sight velocities (±2.5 km s-1) for 6804 stars fromExpand
Modeling the Metallicity Distribution of Globular Clusters
Observed metallicities of globular clusters reflect physical conditions in the interstellar medium of their high-redshift host galaxies. Globular cluster systems in most large galaxies displayExpand
Neutrino emission from neutron stars
Abstract We review the main neutrino emission mechanisms in neutron star crusts and cores. Among them are the well-known reactions such as the electron–positron annihilation, plasmon decay, neutrinoExpand
The Hypervelocity Star Survey presents the currently largest sample of radial velocity measurements of halo stars out to 80 kpc. We apply spherical Jeans modeling to these data in order to derive theExpand
The large-scale and small-scale clustering of lyman break galaxies at 3.5 < z < 5.5 from the goods survey
We report on the angular correlation function of Lyman break galaxies (LBGs) at z ~ 4 and 5 from deep samples obtained from the Great Observatories Deep Origins Survey (GOODS). As for LBGs at z ~ 3,Expand