Journal: Astronomy and Astrophysics

  • Publication
    Lithium Abundances in a Flux-Limited Sample of Galactic Carbon Stars
    Lithium abundances, or upper limits, have been derived for 161 galactic carbon stars, selected from the Two Micron Sky Survey, using high resolution, high...
  • Publication
    Lithium and Hα in stars and brown dwarfs of sigma Orionis.
    We present intermediate- and low-resolution optical spectra around Hα and Li I lambda 6708 Åfor a sample of 25 low mass stars and 2 brown dwarfs with confirmed...
  • Publication
    Lithium and zirconium abundances in massive Galactic O-rich AGB stars
    Lithium and zirconium abundances (the latter taken as representative of s-process enrichment) are determined for a large sample of massive Galactic O-rich AGB...
  • Publication
    Lithium depletion boundary, stellar associations, and Gaia
    Context. Stellar ages are key to improving our understanding of different astrophysical phenomena. However, many techniques to estimate stellar ages are highly...
  • Publication
    Lithium in ROSAT-discovered candidate members in the Alpha Persei cluster
    We present lithium observations of 23 X-ray selected candidate members of alpha Per, which are part of a larger sample of stars identified through two ROSAT...
  • Publication
    Lithium in stars with exoplanets
    We present a comparison of the lithium abundances of stars with and without planetary-mass companions. New lithium abundances are reported in 79 planet hosts...
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    Lithium in the globular cluster NGC 6397. Evidence for dependence on evolutionary status
    Context: Most globular clusters are believed to host a single stellar population. They can thus be considered a good place to study the Spite plateau and to...
  • Publication
    Lithium in the Hyades L5 brown dwarf 2MASS J04183483+2131275
    Aims: From the luminosity, effective temperature and age of the Hyades brown dwarf 2MASS J04183483+2131275 (2M0418), substellar evolutionary models predict a...
  • Publication
    Long term photometric monitoring with the Mercator telescope. Frequencies and mode identification of variable O-B stars
    Aims: We selected a large sample of O-B stars that were considered as (candidate) slowly pulsating B, β Cep, and Maia stars after the analysis of their...