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The redshift dependence of the structure of massive LCDM halos
Liang Gao, Julio F. Navarro, Shaun Cole +5
(Abridged) We use two very large cosmological simulations to study how the density profiles of relaxed LCDM dark halos depend on redshift and on halo mass. We confirm that these pr…
Massive Dark Matter Halos around Bright Isolated Galaxies in the 2dFGRS
Peder Norberg, Carlos S. Frenk, Shaun Cole
We identify a large sample of isolated bright galaxies and their fainter satellites in the 2dF Galaxy Redshift Survey (2dFGRS). We analyse the dynamics of ensembles of these galaxi…
Ram pressure stripping the hot gaseous halos of galaxies in groups and clusters
Ian G. McCarthy, Carlos S. Frenk, Andreea S. Font +5
We use a large suite of carefully controlled full hydrodynamic simulations to study the ram pressure stripping of the hot gaseous halos of galaxies as they fall into massive groups…
Bulges versus disks: the evolution of angular momentum in cosmological simulations of galaxy formation
J. Zavala, T. Okamoto, Carlos S. Frenk
We investigate the evolution of angular momentum in simulations of galaxy formation in a cold dark matter universe. We analyse two model galaxies generated in the N-body/hydrodynam…
The statistical properties of LCDM halo formation
Shaun Cole, John Helly, Carlos S. Frenk +1
We present a comparison of the statistical properties of dark matter halo merger trees extracted from the Millennium Simulation with Extended Press-Schechter (EPS) formalism and th…
The statistics of LCDM Halo Concentrations
Angelo F. Neto, Liang Gao, Philip Bett +6
We use the Millennium Simulation (MS) to study the statistics of LCDM halo concentrations at z = 0. Our results confirm that the average halo concentration declines monotonically w…
Galaxy evolution in the infra-red: comparison of a hierarchical galaxy formation model with SPITZER data
C. G. Lacey, C. M. Baugh, C. S. Frenk +3
We present predictions for the evolution of the galaxy luminosity function, number counts and redshift distributions in the IR based on the Lambda-CDM cosmological model. We use th…
The detectability of baryonic acoustic oscillations in future galaxy surveys
R. Angulo, C. M. Baugh, C. S. Frenk +1
We assess the detectability of baryonic acoustic oscillations (BAO) in the power spectrum of galaxies using ultra large volume N-body simulations of the hierarchical clustering of…
Virial Scaling of Massive Dark Matter Halos: Why Clusters Prefer a High Normalization Cosmology
A. E. Evrard, J. Bialek, M. Busha +14
We present a precise estimate of the bulk virial scaling relation of halos formed via hierarchical clustering in an ensemble of simulated cold dark matter cosmologies. The result i…