I will present an evolutionary model for the origin of Andromeda II, a dSph satellite of M31, involving a merger between two disky dwarf galaxies than explains...
TalkAndromeda II: a merger remnant or a product of tidal stirring
PublicationCGCG 480-022: A Distant Lonesome Merger?
We present a complete analysis, which includes morphology, kinematics, stellar populations, and N-body simulations, of CGCG 480-022, the most distant (cz=14,317...
TalkCosmology on small scales: the structure of (mostly) dark matter halos
The standard model of cosmology -- the ``Lambda cold dark matter'' model -- is based on the idea that the dark matter is a collisionless elementary particle...
PublicationDark matter halo concentrations in the Wilkinson Microwave Anisotropy Probe year 5 cosmology
We use a combination of three large N-body simulations to investigate the dependence of dark matter halo concentrations on halo mass and redshift in the...
PublicationEncounters between spherical galaxies - I. Systems without a dark halo
We report here on a survey of N-body simulations of encounters between spherical galaxies. Initial systems are isotropic Jaffe models. Different sets of mass...
PublicationEncounters between spherical galaxies - II. Systems with a dark halo
We perform N-body simulations of encounters between spherical systems surrounded by a spherical halo. Following a preceding paper with a similar aim, the...
PublicationErratum: Dark matter halo concentrations in the Wilkinson Microwave Anisotropy Probe year 5 cosmology
TalkEvolution of barred galaxies. A model for the Milky Way bar and bulge in this context
Among the different effects of secular evolution of galaxies we find how bars influence enormously their host galaxies. For many years now, it is known how the...
PublicationGalaxies-intergalactic medium interaction calculation - I. Galaxy formation as a function of large-scale environment
We present the first results of hydrodynamical simulations that follow the formation of galaxies to the present day in nearly spherical regions of radius ~20h...