Journal: Astronomy and Astrophysics

  • Publication
    Numerical simulations of linear magnetohydrodynamic waves in two-dimensional force-free magnetic fields
    High resolution observations of the solar corona made with instruments onboard the SOHO and TRACE spacecrafts have provided new evidence for the presence of...
  • Publication
    Numerical simulations of prominence oscillations triggered by external perturbations
    Context. Several energetic disturbances have been identified as triggers of large-amplitude oscillations (LAOs) in prominences. Observations show that Moreton...
  • Publication
    Numerical simulations of quiet Sun magnetic fields seeded by the Biermann battery
    The magnetic fields of the quiet Sun cover at any time more than 90% of its surface and their magnetic energy budget is crucial to explain the thermal structure...
  • Publication
    Numerical simulations of the pulsating DB white dwarf GD 358
    The numerical simulation method for variable white dwarfs of Ising & Koester (2001) is extended to variable DB stars (DBVs or V777 Herculis stars). We find the...
  • Publication
    O-star mass-loss and wind momentum rates in the Galaxy and the Magellanic Clouds Observations and theoretical predictions.
    A new, very fast approximate method is presented to determine mass-loss rates of O-stars from Halpha_ line profiles. The method uses H and HeII departure...
  • Publication
    OB stars at the lowest Local Group metallicity. GTC-OSIRIS observations of Sextans A
    Context. Massive stars play an important role in the chemical and dynamical evolution of the Universe. The first metal-poor stars may have started the...
  • Publication
    Obliquities of exoplanet host stars: Nineteen new and updated measurements, and trends in the sample of 205 measurements
    Measurements of the obliquities in exoplanet systems have revealed some remarkable architectures, some of which are very different from the Solar System. Nearly...
  • Publication
    Obliquity measurement and atmospheric characterisation of the WASP-74 planetary system
    We present new transit observations of the hot Jupiter WASP-74 b (T eq ~ 1860 K) using the high-resolution spectrograph HARPS-N and the multi-colour...
  • Publication
    Observation of enhanced X-ray emission from the CTTS AA Tauri during one transit of an accretion funnel flow
    Context: Classical T Tauri stars are young solar-type stars accreting material from their circumstellar disks. Thanks to a favorable inclination of the system...