9 papers · 1 filter
The maximum contribution to reionization from metal-free stars
Jose M. Rozas, Jordi Miralda-Escude, Eduard Salvador-Sole
We estimate the maximum contribution to reionization from the first generation of massive stars, with zero metallicity, under the assumption that one of these stars forms with a fi…
Implications of Halo Inside-out Growth on the X-Ray Properties of Nearby Galaxy Systems within the Preheating Scenario
Jose M. Solanes, Alberto Manrique, Guillermo Gonzalez-Casado +1
We present an entirely analytic model for a preheated, polytropic intergalactic medium in hydrostatic equilibrium within a NFW dark halo potential in which the evolution of the hal…
Scale Radii and Aggregation Histories of Dark Haloes
Eduard Salvador-Sole, Alberto Manrique, Jose M. Solanes
Relaxed dark-matter haloes are found to exhibit the same universal density profiles regardless of whether they form in hierarchical cosmologies or via spherical collapse. Likewise,…
The origin of HI-deficiency in galaxies on the outskirts of the Virgo cluster. II. Companions and uncertainties in distances and deficiencies
T. Sanchis, G. A. Mamon, E. Salvador-Sole' +2
The origin of the deficiency in neutral Hydrogen of 13 spiral galaxies lying in the outskirts of the Virgo cluster is reassessed. If these galaxies have passed through the core of…
On the Origin of the Inner Structure of Halos
Alberto Manrique, Andreu Raig, Eduard Salvador-Sole +2
We calculate by means of the Press-Schechter formalism the density profile developed by dark-matter halos during accretion, i.e., the continuous aggregation of small clumps. We fin…
Major Mergers of Haloes, Growth of Massive Black Holes and Evolving Luminosity Function of Quasars
Evanthia Hatziminaoglou, Guy Mathez, Jose-Maria Solanes +2
We construct a physically motivated analytical model for the quasar luminosity function, based on the joint star formation and feeding of massive black holes suggested by the obser…