Astrophysical: Techniques

  • Publication
    An M dwarf accompanied by a close-in giant orbiter with SPECULOOS
    In the last decade, a dozen close-in giant planets have been discovered orbiting stars with spectral types ranging from M0 to M4, a mystery since known...
  • Publication
    An optical transmission spectrum of the giant planet WASP-36 b
    We present broad-band photometry of five transits in the planetary system WASP-36, totalling 17 high-precision light curves. Four of the transits were...
  • Publication
    An ultra-short period rocky super-Earth orbiting the G2-star HD 80653★
    Ultra-short period (USP) planets are a class of exoplanets with periods shorter than one day. The origin of this sub-population of planets is still unclear...
  • Publication
    An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685
    Dynamical histories of planetary systems, as well as the atmospheric evolution of highly irradiated planets, can be studied by characterizing the ultra-short...
  • Publication
    An unusually low-density super-Earth transiting the bright early-type M-dwarf GJ 1018 (TOI-244)
    Context. Small planets located at the lower mode of the bimodal radius distribution are generally assumed to be composed of iron and silicates in a proportion...
  • Publication
    An updated MILES stellar library and stellar population models
    Aims: We present a number of improvements to the MILES library and stellar population models. We correct some small errors in the radial velocities of the stars...
  • Publication
    Analysis and calibration of CaII triplet spectroscopy of red giant branch stars from VLT/FLAMES observations
    We demonstrate that low-resolution CaII triplet (CaT) spectroscopic estimates of the overall metallicity ([Fe/H]) of individual red giant branch (RGB) stars in...
  • Publication
    Analysis of a spatially deconvolved solar pore
    Solar pores are active regions with large magnetic field strengths and apparent simple magnetic configurations. Their properties resemble the ones found for the...
  • Publication
    Analysis of γ Doradus and δ Scuti stars observed by Kepler
    The Kepler spacecraft observed over 2000 faint stars that were part of our Guest Observer proposals. The stars were selected from the Kepler Input Catalog (KIC)...