Browsing by Author "Smith, R."

Now showing items 1-6 of 6

    • KINEMATICAL AND CHEMICAL VERTICAL STRUCTURE OF THE GALACTIC THICK DISK. II. A LACK OF DARK MATTER IN THE ... 
      Moni Bidin, Christian; Carraro, Giovanni; Méndez Bussard, René Alejandro; Smith, R. (IOP PUBLISHING LTD, 2012-05-20)
      We estimated the dynamical surface mass density Sigma at the solar position between Z = 1.5 and 4 kpc from the Galactic plane, as inferred from the kinematics of thick disk stars. The formulation is exact within the limit ...
    • On the local dark matter density 
      Moni Bidin, C.; Smith, R.; Carraro, Giovanni; Méndez Bussard, René Alejandro; Moyano, M. (EDP Sciences, 2015)
      Context. In 2012, we applied a three-dimensional formulation to kinematic measurements of the Galactic thick disk and derived a surprisingly low dark matter density at the solar position. This result was challenged by Bovy ...
    • A possible formation scenario for dwarf spheroidal galaxies - I. Fiducial model 
      Assmann, P.; Fellhauer, M.; Wilkinson, M. I.; Smith, R. (2013-06)
      We perform numerical simulations to study a formation scenario for dwarf spheroidal (dSph) galaxies in which their stellar populations are the products of the dissolution of open star clusters and stellar associations ...
    • A possible formation scenario for dwarf spheroidal galaxies – II. A parameter study 
      Assmann, P.; Fellhauer, M.; Wilkinson, M. I.; Smith, R.; Blaña, M. (Oxford University Press, 2013)
      Dwarf spheroidal (dSph) galaxies are considered the basic building blocks of the galaxy formation process in the Lambda cold dark matter hierarchical cosmological model. These galaxies are believed to be the most dark ...
    • Quantification of DDX3Y, RBMY1, DAZ and TSPY mRNAs in testes of patients with severe impairment of spermatogenesis 
      Lardone, M. C.; Parodi, D. A.; Valdevenito, R.; Ebensperger, M.; Piottante, A.; Madariaga, M.; Smith, R.; Pommer, R.; Zambrano, N.; Castro, A. (2007)
      Y chromosome microdeletion is the most important genetic cause of impairment of spermatogenesis. Nevertheless, a significant proportion of patients with spermatogenic failure do not have this condition. This study investigated ...
    • Total antioxidant capacity of human seminal plasma 
      Smith, R.; Vantman, D.; Ponce, J.; Escobar, J.; Lissi, E. (Oxford University Press, 1996)
      Although the importance of seminal plasma in the protection of spermatozoa against reactive oxygen species is well known, only a few studies have investigated its antioxidative properties and the possible relationship ...