Astrofísicas: Via Láctea

  • Publicación
    Limits on the D:H ratio in the interstellar medium from molecular observations
    The abundance ratio of D:H in the interstellar medium can be derived either more directly from the UV absorption measurements of HD and H2 in the spectra of...
  • Publicación
    Mass Models of the Milky Way and Estimation of Its Mass from the Gaia DR3 Data Set
    We use data from the Gaia DR3 data set to estimate the mass of the Milky Way (MW) by analyzing the rotation curve in the range of distances 5 to 28 kpc. We...
  • Publicación
    Mass Models of the Milky Way and Estimation of Its Mass from the Gaia DR3 Data Set
    We use data from the Gaia DR3 data set to estimate the mass of the Milky Way (MW) by analyzing the rotation curve in the range of distances 5 to 28 kpc. We...
  • Publicación
    Near infrared stellar counts and a model of galactic distribution
    A model of the galactic stellar distribution has been developed and the surface stellar densities in the near infrared are compared with observations along the...
  • Noticia
    Observan una gran corriente de marea en la galaxia del Sombrero
    Según el modelo cosmológico más actualizado, las grandes galaxias espirales como la Vía Láctea crecieron absorbiendo galaxias menores en una especie de...
  • Publicación
    Overview of the DESI Milky Way Survey
    We describe the Milky Way Survey (MWS) that will be undertaken with the Dark Energy Spectroscopic Instrument (DESI) on the Mayall 4 m telescope at the Kitt Peak...
  • Publicación
    Oxygen abundances in F-type stars of the Hyades and the Ursa Major group
    We have derived the oxygen abundances of 50 F-type main-sequence stars, belonging to the Hyades open cluster, the Ursa Major group, and the field, using an NLTE...
  • Publicación
    Oxygen abundances in old disc and halo stars of the Galaxy
    Intermediate resolution CCD spectra of the oxygen triplet at 7770 A have been analyzed to determine oxygen abundances in a sample of metal-deficient stars with...
  • Publicación
    Oxygen abundances in unevolved metal-poor stars - Interpretation and consequences
    The oxygen abundance has been determined by analysis of the O I infrared triplet in 30 unevolved field stars of metallicities in the range Fe/H abundance ratio...