Astrofísicas: Galaxias

  • Publicación
    On the anticorrelation between pericentric distance and inner dark matter density of Milky Way's dwarf spheroidal galaxies
    An anticorrelation between the central density of the dark matter (DM) halo (ρ 150, DM) and the pericentric distances (r p) of the Milky Way's (MW's) dwarf...
  • Publicación
    On the application of the spherical infall model to real (anisotropic and/or non-isolated) mass concentrations
    We have studied analytically the mean pull on shells of real (anisotropic and/or non-isolated) mass concentrations. Using a non-linear scheme, the radial...
  • Publicación
    On the buildup of massive early-type galaxies at z ⪉ 1. I. Reconciling their hierarchical assembly with mass downsizing
    Context. Several studies have tried to ascertain whether the increase in abundance of the early-type galaxies (E-S0a's) with time is mainly due to major mergers...
  • Publicación
    On the bulge-to-disk size ratio for spiral galaxies
    Not Available
  • Publicación
    On the Central Helium-burning Variable Stars of the LeoI Dwarf Spheroidal Galaxy
    We present a study of short-period, central helium-burning variable stars in the Local Group dwarf spheroidal galaxy LeoI, including 106 RR Lyrae stars and 51...
  • Publicación
    On the colors of barlenses and their link to B/P bulges
    Barlenses are morphological features present in barred galaxies with morphological types between S0 and Sb. Recently, they have been suggested to be the more...
  • Publicación
    On the Compact H II Galaxy UM 408 as Seen by GMOS-IFU: Physical Conditions
    We present Integral Field Unit GMOS-IFU data of the compact H II galaxy UM 408, obtained at the Gemini South telescope, in order to derive the spatial...
  • Publicación
    On the Connection Between Shape and Stellar Population in Early-type Galaxies
    We report on the discovery of a relation between the stellar mass M* of early-type galaxies (hereafter ETGs), their shape, as parameterized by the Sersic index...
  • Publicación
    On the Connection of the Apparent Proper Motion and the VLBI Structure of Compact Radio Sources
    Many of the compact extragalactic radio sources that are used as fiducial points to define the celestial reference frame are known to have proper motions...