Journal: Astronomy and Astrophysics

  • Publication
    The bright optical afterglow of the long GRB 001007
    We present optical follow up observations of the long GRB 001007 between 6.14 hours and ~468 days after the event. An unusually bright optical afterglow (OA)...
  • Publication
    The brightest pure-H ultracool white dwarf
    We report the identification of LSR J0745+2627 in the United Kingdom InfraRed Telescope Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS) as a cool...
  • Publication
    The brightest stars of the σ Orionis cluster
    Context: The very young σ Orionis cluster (~3 Ma) is a cornerstone in understanding the formation of stars and substellar objects down to planetary masses...
  • Publication
    The bulge luminosity functions in the MSX infrared bands
    We use an inversion technique to derive the luminosity functions of the Galactic bulge from point source counts extracted from the Midcourse Space Experiment's...
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    The bulk of the cosmic infrared background resolved by ISOCAM
    Deep extragalactic surveys with ISOCAM revealed the presence of a large density of faint mid-infrared (MIR) sources. We have computed the 15 mu m integrated...
  • Publication
    The BVJK Lightcurves of the Shortperiod Eclipsing Binary Cg-Cygni
    BVJK light curves of CG Cygni show an apparent infrared excess 0.2 mag out of eclipse, assuming the spectral types of the components to be G9.5V + K3V. The...
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    The C/O ratio at low metallicity: constraints on early chemical evolution from observations of Galactic halo stars
    Aims: We present new measurements of the abundances of carbon and oxygen derived from high-excitation C i and O i absorption lines in metal-poor halo stars...
  • Publication
    The Ca+ abundance of HVC complex C
    We report the first detection of Ca II H and K absorption in the high-velocity cloud complex C, the largest HVC. Absorption is detected in the spectra of the...
  • Publication
    The CALIFA survey across the Hubble sequence. Spatially resolved stellar population properties in galaxies
    Various different physical processes contribute to the star formation and stellar mass assembly histories of galaxies. One important approach to understanding...