Astrophysical: Techniques

  • Publication
    Binary frequency of planet-host stars at wide separations. A new brown dwarf companion to a planet-host star
    Aims: The aim of the project is to improve our knowledge on the multiplicity of planet-host stars at wide physical separations. Methods: We cross-matched...
  • Publication
    Black Mirror: The impact of rotational broadening on the search for reflected light from 51 Pegasi b with high resolution spectroscopy
    Context. The extreme contrast ratios between stars and their planets at optical wavelengths make it challenging to isolate the light reflected by exoplanet...
  • Publication
    Bolometric Treatment of Irradiation Effects: General Discussion and Application to Binary Stars
    A general framework for dealing with irradiation effects in the bolometric sense—specifically, reflection with heat absorption and the consequent redistribution...
  • Publication
    Borderline hyperbolic comet C/2021 O3 (PANSTARRS) was fading as it approached the Sun
    We present an observational and numerical study of the borderline hyperbolic comet C/2021 O3 (PANSTARRS) performed during its recent passage through the inner...
  • Publication
    Bridging model and observed stellar spectra
    Accurate model stellar fluxes are key for the analysis of observations of individual stars or stellar populations. Model spectra differ from real stellar...
  • Publication
    Bright Opportunities for Atmospheric Characterization of Small Planets: Masses and Radii of K2-3 b, c, and d and GJ3470 b from Radial Velocity Measurements and Spitzer Transits
    We report improved masses, radii, and densities for four planets in two bright M-dwarf systems, K2-3 and GJ3470, derived from a combination of new radial...
  • Publication
    Bright Points in the Quiet Sun as Observed in the Visible and Near-UV by the Balloon-borne Observatory SUNRISE
    Bright points (BPs) are manifestations of small magnetic elements in the solar photosphere. Their brightness contrast not only gives insight into the thermal...
  • Publication
    Broad-band spectrophotometry of HAT-P-32 b: search for a scattering signature in the planetary spectrum
    Multicolour broad-band transit observations offer the opportunity to characterize the atmosphere of an extrasolar planet with small- to medium-sized telescopes...
  • Publication
    Broadband transmission spectroscopy of HD 209458b with ESPRESSO: evidence for Na, TiO, or both
    Context. The detection and characterization of exoplanet atmospheres is currently one of the main drivers pushing the development of new observing facilities...