Journal: Astronomy and Astrophysics

  • Publication
    Error dependencies in the space-based CNEOS fireball database
    Context. The CNEOS database offers near-global coverage of fireball events based on U.S. Government sensor detections. The database contributes to...
  • Publication
    Eruptive mass loss less than a year before the explosion of superluminous supernovae: I. The cases of SN 2020xga and SN 2022xgc
    We present photometric and spectroscopic observations of SN 2020xga and SN 2022xgc, two hydrogen-poor superluminous supernovae (SLSNe-I) at z = 0.4296 and z = 0...
  • Publication
    ESPRESSO at VLT. On-sky performance and first results
    Context. ESPRESSO is the new high-resolution spectrograph of ESO's Very Large Telescope (VLT). It was designed for ultra-high radial-velocity (RV) precision and...
  • Publication
    ESPRESSO high-resolution transmission spectroscopy of WASP-76 b
    Aims: We report on ESPRESSO high-resolution transmission spectroscopic observations of two primary transits of the highly irradiated, ultra-hot Jupiter-sized...
  • Publication
    ESPRESSO highlights the binary nature of the ultra-metal-poor giant HE 0107-5240
    Context. The vast majority of the known stars of ultra low metallicity ([Fe/H] < -4.5) are known to be enhanced in carbon, and belong to the "low-carbon band"...
  • Publication
    ESPRESSO mass determination of TOI-263b: an extreme inhabitant of the brown dwarf desert
    The TESS mission has reported a wealth of new planetary systems around bright and nearby stars amenable for detailed characterizations of planet properties and...
  • Publication
    ESPRESSO observations of HE 0107−5240 and other CEMP-no stars with [Fe/H] ≤ -4.5
    Context. HE 0107−5240 is a hyper metal-poor star with [Fe/H] = −5.39, one of the lowest-metallicity stars known. Its stellar atmosphere is enhanced in carbon...
  • Publication
    ESPRESSO reveals blueshifted neutral iron emission lines on the dayside of WASP-76 b
    Context. Ultra hot Jupiters (gas giants with T eq > 2000 K) are intriguing exoplanets due to the extreme physics and chemistry present in their atmospheres...
  • Publication
    Estimating the Degradation of Brightness Power Spectra of Solar Granulation from Images Outside the Disk Centre
    A method is presented to estimate the influence of the atmospheric turbulence and the telescope on the mean power spectra of the granulation brightness...