Journal: Astronomy and Astrophysics

  • Publication
    Spectro-photometric evolution of elliptical galaxies. II. Models with infall.
    In this paper we present new chemo-spectro-photometric models of elliptical galaxies in which infall of primordial gas is allowed to occur. They aim to simulate...
  • Publication
    Spectropolarimetric analysis of an active region filament. I. Magnetic and dynamical properties from single component inversions
    Aims: The determination of the magnetic filed vector in solar filaments is made possible by interpreting the Hanle and Zeeman effects in suitable chromospheric...
  • Publication
    Spectropolarimetric analysis of an active region filament.. II. Evidence of the limitations of a single-component model
    Aims: Our aim is to demonstrate the limitations of using a single-component model to study the magnetic field of an active region filament. To do this, we...
  • Publication
    Spectropolarimetric forward modelling of the lines of the Lyman-series using a self-consistent, global, solar coronal model
    Context. The presence and importance of the coronal magnetic field is illustrated by a wide range of phenomena, such as the abnormally high temperatures of the...
  • Publication
    Spectropolarimetric multi line analysis of stellar magnetic fields
    Aims: In this paper we study the feasibility of inferring the magnetic field from polarized multi line spectra using two methods: The pseudo line approach and...
  • Publication
    Spectropolarimetric observations of the solar atmosphere in the Hα 6563 Å line
    We present novel spectropolarimetric observations of the hydrogen Hα line taken with the Zürich Imaging Polarimeter (ZIMPOL) at the Gregory Coudé Telescope of...
  • Publication
    Spectropolarimetry in a sunspot penumbra. Spatial dependence of Stokes asymmetries in Fe I 1564.8 nm
    Stokes profiles of sunspot penumbrae show distinct asymmetries, which point to gradients in the velocity field and in the magnetic field. We present...
  • Publication
    Spectropolarimetry of the symbiotic nova HM Sge
    We present the first spectropolarimetric observations of the symbiotic nova HM Sge. We first note that marked spectral changes occurred: in the near IR the...
  • Publication
    Spectroscopic analysis of the B/Be visual binary HR 1847
    We studied both components of a slightly overlooked visual binary HR 1847 spectroscopically to determine its basic physical and orbital parameters. Basic...