Journal: Astronomy and Astrophysics

  • Publication
    Linear wavelength correlation matrices of photospheric and chromospheric spectral lines. I. Observations vs. modeling
    Context. The process that heats the solar chromosphere is a difficult target for observational studies because the assumption of local thermal equilibrium (LTE)...
  • Publication
    Lines in the cosmic microwave background spectrum from the epoch of cosmological helium recombination
    The main goal of this work is to calculate the contributions of bound-bound transitions of helium to the cosmological recombination spectrum. We show that...
  • Publication
    Linking star formation thresholds and truncations in the thin and thick disks of the low-mass galaxy UGC 7321
    Thin and thick disks are found in most spiral galaxies, yet their formation scenarios remain uncertain. Whether thick disks form through slow or fast, internal...
  • Publication
    Links between the dynamical evolution and the surface color of the Centaurs
    Context. The Centaurs are a transitional population of minor bodies of the solar system and the evolutionary link between the trans-Neptunian objects and the...
  • Publication
    Lithium abundance and rotation of seismic solar analogues. Solar and stellar connection from Kepler and Hermes observations
    Context. Lithium abundance A(Li) and surface rotation are good diagnostic tools to probe the internal mixing and angular momentum transfer in stars. Aims: We...
  • 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...