Journal: Astronomy and Astrophysics

  • Publication
    Inference of the chromospheric magnetic field orientation in the Ca ii 8542 Å line fibrils
    Context. Solar chromospheric fibrils, as observed in the core of strong chromospheric spectral lines, extend from photospheric field concentrations suggesting...
  • Publication
    Inferring chromospheric velocities in an M3.2 flare using He I 1083.0 nm and Ca II 854.2 nm
    Aims. Our aim was to study the chromospheric line-of-sight (LOS) velocities during the GOES M3.2 flare (SOL2013-05-17T08:43) using simultaneous high-resolution...
  • Publication
    Inferring physical parameters in solar prominence threads
    Context. High resolution observations have permitted the resolution of solar prominences/filaments into sets of threads/fibrils. However, the values of the...
  • Publication
    Inflection point in the power spectrum of stellar brightness variations. II. The Sun
    Context. Young and active stars generally have regular, almost sinusoidal, patterns of variability attributed to their rotation, while the majority of older and...
  • Publication
    Inflection point in the power spectrum of stellar brightness variations. III. Facular versus spot dominance on stars with known rotation periods
    Context. Stellar rotation periods can be determined by observing brightness variations caused by active magnetic regions transiting visible stellar disk as the...
  • Publication
    Influence of phase-diversity image reconstruction techniques on circular polarization asymmetries
    Context. Full Stokes filter-polarimeters are key instruments for investigating the rapid evolution of magnetic structures on the solar surface. To this end, the...
  • Publication
    Infrared observations of binary stars. II
    Near infrared photometry is presented for the close eclipsing binaries R CMa, TX UMa, delta Lib, TV Cas, and AR Lac. The data are used to place limits on mass...
  • Publication
    Infrared observations of peculiar carbon stars.
    We present a uniform and high quality set of infrared photometric (JHK) observations of the 6 peculiar carbon giant stars V Ari, UV Cam, BD+34 911, TU Gem, BD...
  • Publication
    Infrared radial velocities of vB 10
    We present radial velocities of the M8V-type, very low-mass star vB 10 obtained at four different epochs between 2001 and 2008. We use high-resolution (R ~ 20...