Astrophysical: Stellar winds

  • Publication
    Mass outflow and its consequences in the circumnuclear zones of galaxies
    Spectroscopic and photometric observations are used to determine the distributions of gas and the kinematics in the central zones of a number of spirals. In...
  • Publication
    Multi-level non-LTE calculations for very optically thick winds and photospheres under extreme NLTE conditions
    A new technique to calculate multilevel non-LTE continuum formation in the UV of stellar winds and plane-parallel, static stellar atmospheres is developed using...
  • Publication
    NLTE analysis of high-resolution spectra of CSPN
    Preliminary results of new high-resolution and S/N ratio spectra of central stars of planetary nebulae (CSPN) are presented. The atmospheric parameters (Teff...
  • Publication
    NLTE analysis of massive OB stars in open clusters
    The paper presents a new method for deriving stellar masses and distances using the theory of radiatively driven winds as presented by Kudritzki et al. (1989)...
  • Publication
    Observations of outflow and its consequences in circum-nuclear zones of spirals
    The radial hydrogen (H2 + HI) distribution in spirals takes two forms: with a density peak at the nucleus or with a circular 'hole' around it. Spectral and...
  • Publication
    On the evolution of supernova remnants. II - Two-dimensional calculations of explosions inside pre-existing wind-driven bubbles
    Supernova explosions within wind-driven bubbles are studied with 2D hydrodynamical calculations. Two different density distributions for the ejecta are...
  • Publication
    On the evolution of supernova remnants. III - Off-centred supernova explosions in pre-existing wind-driven bubbles
    It is shown that supernova explosions inside wind-driven cavities created by progenitors moving across the ambient medium result in a large diversity of remnant...
  • Publication
    On the MG 2 and Fe 2 resonance lines in Herbig AE stars: Preliminary results
    The IUE observed AB Aur, HD250550, and BD + 46 deg 3471 at high resolution in the range 2000 to 32000 A. The MgII resonance line profiles all show a P Cygni...
  • Publication
    On the presence of two discs in the X-ray/Be binary A 0535 + 26/HDE 245770
    The analysis of the efficiency of accretion in the X-ray binary system A 0535 + 26/HDE 245770 and of the specific angular momentum of the matter accreted during...