Journal: Astronomy and Astrophysics

  • Publication
    On the potassium-rotation connection in late-type Alpha Persei stars
    We present measurements of the K I λ 7699 line from spectra of 19 late-type members of the αPersei cluster obtained with the Intermediate Dispersion...
  • Publication
    On the properties of contact binary stars
    We have compiled a catalogue of light curve solutions of contact binary stars. It contains the results of 159 light curve solutions. The properties of contact...
  • Publication
    On the radio emitting high mass X-ray binary LS 5039
    We present new optical - near-IR spectroscopic and photometric observations of the newly discovered galactic microquasar LS 5039, which indicate a...
  • Publication
    On the red giant branch mass loss in 47 Tucanae: Constraints from the horizontal branch morphology
    We obtain stringent constraints on the actual efficiency of mass loss for red giant branch stars in the Galactic globular cluster 47 Tuc, by comparing synthetic...
  • Publication
    On the relation between the IR continuum and the active galactic nucleus in Seyfert galaxies
    A sample of the brightest known Seyfert galaxies from the CfA sample is analyzed on the basis of ISO photometric and spectroscopic data. Regardless of the...
  • Publication
    On the search for transition zone lines in late A type stars
    Observations of the 1400-1800 A region in late A type stars are presented, which were obtained using the IUE satellite at low and high resolution. The...
  • Publication
    On the shell spectrum of 48 Librae
    Spectrograms of the variable star 48 Librae, taken near the last expected minimum, have been examined for irregularities of the shell line profiles. The...
  • Publication
    On the simultaneous optical and near-infrared variability of pre-main sequence stars
    For a complete understanding of the physical processes causing the photometric variability of pre-main sequence systems, simultaneous optical and near-IR...
  • Publication
    On the Sr I λ4607 Å Hanle depolarization signals in the quiet Sun
    The Hanle depolarization signals of Sr i λ4607 Å have been used to estimate the unsigned magnetic flux and magnetic energy existing in the quiet Sun photosphere...