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Astrophysical: Solar neighborhood

  • Publication
    Production of Lithium in the Galactic Disk
    The abundance of Li in stars formed within the past 5 Gyr is logN(Li)=3.2(+/-0.2), while the corresponding value for the oldest stars in the Galaxy is logN(Li)...
  • Publication
    Radial velocities of nearby RR Lyrae stars.
    A survey of chemical abundances and radial velocities for a spatially selected sample of RR Lyrae stars has been started. Assuming an absolute magnitude of -0.6...
  • Publication
    Redetermination of the interstellar C-12/C-13 ratio in the solar vicinity
    An analysis of 50 optical spectra of the interstellar methylidyne ion in the direction of HD26676 and HD149038 derived very similar interstellar isotopic ratios...
  • Publication
    Searching for solar siblings among the HARPS data
    The search for solar siblings has been particularly fruitful in the past few years. At present, there are four plausible candidates reported in the literature...
  • Publication
    Spectroscopic parameters for 451 stars in the HARPS GTO planet search program. Stellar [Fe/H] and the frequency of exo-Neptunes
    To understand the formation and evolution of solar-type stars in the solar neighborhood, we need to measure their stellar parameters to high accuracy. We...
  • Publication
    StarHorse results for spectroscopic surveys and Gaia DR3: Chrono-chemical populations in the solar vicinity, the genuine thick disk, and young alpha-rich stars
    The Gaia mission has provided an invaluable wealth of astrometric data for more than a billion stars in our Galaxy. The synergy between Gaia astrometry...
  • Publication
    StarHorse results for spectroscopic surveys with Gaia EDR3: Chrono-chemical populations in the solar vicinity, the genuine thick disk, and young alpha-rich stars (Corrigendum)
    The revised catalog is only available at the CDS via anonymous ftp to cdsarc.cds.unistra.fr (ftp://130.79.128.5) or via https://cdsarc.cds.unistra.fr/viz-bin...
  • Publication
    Statistical properties of exoplanets. II. Metallicity, orbital parameters, and space velocities
    In this article we present a detailed spectroscopic analysis of more than 50 extra-solar planet host stars. Stellar atmospheric parameters and metallicities are...
  • Publication
    Stellar activity as a tracer of moving groups
    We present the results of a study of the stellar activity in the solar neighborhood using complete kinematics (galactocentric velocities U, V, W) and the...