Journal: Astronomy and Astrophysics

  • Publication
    Global photometric properties of (162173) Ryugu
    Context. The Hayabusa2 spacecraft launched by Japan Aerospace Exploration Agency has been conducting observations of the asteroid (162173) Ryugu since June 2018...
  • Publication
    Global solar Doppler velocity determination with the GOLF/SoHO instrument
    The Global Oscillation at Low Frequencies (GOLF) experiment is a resonant scattering spectrophotometer on board the Solar and Heliospheric Observatory (SoHO)...
  • Publication
    Globular Cluster Red Giants as a Probe of Horizontal Branch Luminosities
    Connecting observational data to recent theoretical prescriptions for the luminosity of RR Lyrae, we present a new estimate of the bolometric magnitude of the...
  • Publication
    Globular cluster systems of six shell galaxies
    Context: .Shells in Elliptical Galaxies are faint, sharp-edged features, believed to provide evidence of a recent (˜ 0.5 - 2 × 109 years ago) merger event. We...
  • Publication
    Gran Telescopio Canarias OSIRIS transiting exoplanet atmospheric survey: detection of potassium in XO-2b from narrowband spectrophotometry
    We present Gran Telescopio Canarias (GTC) optical transit narrowband photometry of the hot-Jupiter exoplanet XO-2b using the OSIRIS instrument. This unique...
  • Publication
    Granulation and magnetism in the solar atmosphere.
    The properties of the photosphere in magnetic and non magnetic regions, at two levels in the solar atmosphere, have been studied, using two virtually...
  • Publication
    Granulation in K-type dwarf stars. I. Spectroscopic observations
    Aims: We seek to detect and quantify the effects of surface convection (granulation) on the line spectra of K-dwarfs as a first step towards a rigorous testing...
  • Publication
    Granulation in K-type dwarf stars. II. Hydrodynamic simulations and 3D spectrum synthesis
    Aims: To explore the impact of surface inhomogeneities on stellar spectra, granulation models need to be computed. Ideally, the most fundamental characteristics...
  • Publication
    Gray transits of WD 1145+017 over the visible band
    We have observed several relatively deep transits of the white dwarf WD 1145+017 with the Gran Telescopio Canarias (GTC) in the wavelength range 480 to 920 nm...