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The Halo Occupation Distribution and the Physics of Galaxy Formation
Andreas A. Berlind, David H. Weinberg, Andrew J. Benson +7
The halo occupation distribution (HOD) describes the bias between galaxies and dark matter by specifying (a) the probability P(N|M) that a halo of virial mass M contains N galaxies…
The Effects of Photoionization on Galaxy Formation -- III: Environmental Dependence in the Luminosity Function
A. J. Benson, C. S. Frenk, C. M. Baugh +2
Using semi-analytic modeling techniques, we calculate the luminosity function of galaxy populations residing in cold dark matter halos of different mass. We pay particular attentio…
Galaxy formation using halo merger histories taken from N-body simulations
John C. Helly, Shaun Cole, Carlos S. Frenk +3
We develop a hybrid galaxy formation model which uses outputs from an N-body simulation to follow the merger histories (or ``merger trees'') of dark matter halos and treats baryoni…
Statistics of Neutral Regions During Hydrogen Re-Ionization
Adi Nusser, Andrew Benson, Naoshi Sugiyama +1
We present predictions for two statistical measures of the hydrogen reionization process at high redshift. The first statistic is the number of neutral segments identified in spect…
Cosmological dark matter annihilations into gamma-rays - a closer look
Piero Ullio, Lars Bergstrom, Joakim Edsjo +1
We investigate the prospects of detecting weakly interacting massive particle (WIMP) dark matter by measuring the contribution to the extragalactic gamma-ray radiation induced, in…
The evolution of galaxy mass in hierarchical models
C. M. Baugh, A. J. Benson, S. Cole +2
Advances in extragalactic astronomy have prompted the development of increasingly realistic models which aim to describe the formation and evolution of galaxies. We review the phil…
A Comparison of Gas Dynamics in SPH and Semi-analytic Models of Galaxy Formation
John C. Helly, Shaun Cole, Carlos S. Frenk +4
We compare the results of two techniques used to calculate the evolution of cooling gas during galaxy formation: Smooth Particle Hydrodynamics (SPH) simulations and semi-analytic m…