Journal: Astronomy and Astrophysics

  • Publication
    Oxygen abundances in nearby stars. Clues to the formation and evolution of the Galactic disk
    The abundances of iron and oxygen are homogeneously determined in a sample of 523 nearby (d 5500 K and [Fe/H] -0.3, we find no obvious indication of a sudden...
  • Publication
    Oxygen abundances in planet-harbouring stars. Comparison of different abundance indicators
    We present a detailed and uniform study of oxygen abundances in 155 solar type stars, 96 of which are planet hosts and 59 of which form part of a volume-limited...
  • Publication
    Oxygen and magnesium abundance in the ultra-metal-poor giants CS 22949-037 and CS 29498-043: Challenges in models of atmospheres
    We report the results of a non-LTE Fe, O and Mg abundance analysis of the carbon-nitrogen-rich ultra-metal-poor giants CS 29498-043 and CS 22949-037. The...
  • Publication
    Oxygen and silicon abundances in Cygnus OB2. Chemical homogeneity in a sample of OB slow rotators
    Context. Cygnus OB2 is a rich OB association in the Galaxy located at only ˜1.4 kpc from us which has experienced intense star formation in the last 20-25 Myr...
  • Publication
    Oxygen, sulfur, and iron radial abundance gradients of classical Cepheids across the Galactic thin disk★★★
    Context. Classical Cepheids (CCs) are solid distance indicators and tracers of young stellar populations. Dating back to the beginning of the 20th century, they...
  • Publication
    PACS Evolutionary Probe (PEP) - A Herschel key program
    Deep far-infrared photometric surveys studying galaxy evolution and the nature of the cosmic infrared background are a key strength of the Herschel mission. We...
  • Publication
    Pair separation of magnetic elements in the quiet Sun
    The dynamic properties of the quiet Sun photosphere can be investigated by analyzing the pair dispersion of small-scale magnetic fields (i.e., magnetic elements...
  • Publication
    Panning for gold, but finding helium: Discovery of the ultra-stripped supernova SN 2019wxt from gravitational-wave follow-up observations
    We present the results from multi-wavelength observations of a transient discovered during an intensive follow-up campaign of S191213g, a gravitational wave (GW...
  • Publication
    Parallaxes and physical properties of 11 mid-to-late T dwarfs
    Aims: We present parallaxes of 11 mid-to-late T dwarfs observed in the UKIRT Infrared Deep Sky Survey. We use these results to test the reliability of model...