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Anisotropies in the Distribution of Satellite Galaxies
Dennis Zaritsky, Rodney Smith, Carlos S. Frenk +1
We find that satellites of isolated disk galaxies at projected radii between 300 and 500 kpc are distributed asymmetrically about the parent galaxy and aligned preferentially with…
More Satellites of Spiral Galaxies
Dennis Zaritsky, Rodney Smith, Carlos Frenk +1
We present a revised and expanded catalog of satellite galaxies of a set of isolated spiral galaxies similar in luminosity to the Milky Way. This sample of 115 satellites, 69 of wh…
Dark halo mergers and the formation of a universal profile
D. Syer, Simon D. M. White
We argue that a universal density profile for dark matter halos arises as a natural consequence of hierarchical structure formation. It is a fixed point in the process of repeated…
A Universal Density Profile from Hierarchical Clustering
Julio F. Navarro, Carlos S. Frenk, Simon D. M. White
We use high-resolution N-body simulations to study the equilibrium density profiles of dark matter halos in hierarchically clustering universes. We find that all such profiles have…
Two--body heating in numerical galaxy formation experiments
Matthias Steinmetz, Simon D. M. White
We show that discreteness effects related to classical two-body relaxation produce spurious heating of the gaseous component in numerical simulations of galaxy formation. A simple…
Detection of Strong Evolution in the Population of Early-Type Galaxies
Guinevere Kauffmann, Stephane Charlot, Simon D. M. White
The standard picture holds that giant elliptical galaxies formed in a single burst at high redshift. Aging of their stellar populations subsequently caused them to fade and become…