News type: Research news

  • News
    The GALEX/S4G UV-IR color-color diagram: catching Spiral Galaxies away from the Blue Sequence.
    We obtained GALEX FUV, NUV, and Spitzer/IRAC 3.6 µm photometry for >2000 galaxies, available for 90% of the S4G sample. We find a very tight "GALEX Blue...
  • News
    The GAPS Programme with HARPS-N at TNG. III: The retrograde orbit of HAT-P-18b.
    The measurement of the Rossiter-McLaughlin effect for transiting exoplanetsplaces constraints on the orientation of the orbital axis with respect to the stellar...
  • News
    The helium enrichment in massive stars during the main sequence could be the result of mass accretion
    There is increasing evidence that single-star evolutionary models are unable to reproduce all of the observational properties of massive stars. Binary...
  • News
    The hypergiant HR 8752 evolving through the yellow evolutionary void.
    Context. We study the time history of the yellow hypergiant HR 8752 based on high-resolution spectra (1973-2005), the observed MK spectral classification data...
  • News
    The IACOB project: II. On the scatter of O-dwarf spectral type - effective temperature calibrations.
    We are now in an era of large spectroscopic surveys of OB-type stars. Quantitative spectroscopic analysis of these modern datasets is enabling us to review the...
  • News
    The impact of deep learning for the analysis of galaxy surveys
    The amount and complexity of data delivered by modern galaxy surveys has been steadily increasing over the past years. New facilities will soon provide imaging...
  • News
    The impact of strong recombination on temperature determination in planetary nebulae
    The long-standing difference in chemical abundances determined from optical recombination lines and collisionally excited lines raises questions about our...
  • News
    The impact of the Kasatochi eruption on the Moon's illumination during the August 2008 lunar eclipse.
    The Moon's changeable aspect during a lunar eclipse is largely attributable to variations in the refracted unscattered sunlight absorbed by the terrestrial...
  • News
    The JWST view of the barred galaxy population in the SMACS0723 galaxy cluster
    The cosmic evolution of the barred galaxy population provides key information about the secular evolution of galaxies and the settling of rotationally dominated...