Journal: Astronomy and Astrophysics

  • Publication
    Numerical simulations of exocomet transits: Insights from β Pic and KIC 3542116
    In recent years, the topic of existence and exploration of exocomets has been gaining increasing attention. The asymmetrical decrease in the star's brightness...
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    Numerical simulations of kinematic dynamo action
    Numerical simulations of kinematic dynamo action in steady and three-dimensional ABC flows are presented with special focus on the difference in growth rates...
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    Numerical simulations of large-amplitude oscillations in flux rope solar prominences
    Context. Large-amplitude oscillations (LAOs) of solar prominences are a very spectacular, but poorly understood, phenomena. These motions have amplitudes larger...
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    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...
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    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...
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    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...
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    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...