Astrophysical: Stellar winds

  • Publication
    Supersonic turbulence in giant extragalactic HII regions
    I discuss in this paper the more likely physical mechanisms that could provide the energy input for the supersonic motions observed in giant extragalactic HII...
  • Publication
    The circumburst density profile around GRB progenitors
    Observational and theoretical evidence suggest that long gamma-ray bursts (GRBs) originate from the collapse of massive stars, while short bursts are caused by...
  • Publication
    The Origin of Weakened Magnetic Braking in Old Solar Analogs
    The rotation rates of main-sequence stars slow over time as they gradually lose angular momentum to their magnetized stellar winds. The rate of angular momentum...
  • Publication
    Ultraviolet and optical spectroscopy of a B supergiant star in M 31
    We present and discuss the UV spectrum of the supergiant star in NGC206-277 in M 31, obtained with the Faint Object Spectrograph (FOS) on Hubble Space Telescope...
  • Publication
    Wind variability of LBV stars
    General properties of Luminous Blue Variables (LBV) have been reviewed by Lamers (1987). The LBV's are all close to the Humphreys-Davidson luminosity upper...