O stars with weak winds: the Galactic case

  title={O stars with weak winds: the Galactic case},
  author={Fabrice Martins and Daniel Schaerer and John D. Hillier and Fr{\'e}d{\'e}ric Meynadier and M. Heydari-Malayeri and Nolan R. Walborn},
  journal={Astronomy and Astrophysics},
We study the stellar and wind properties of a sample of Galactic O dwarfs to track the conditions under which weak winds (i.e mass loss rates lower than � 10 −8 M⊙ yr −1 ) appear. The sample is composed of low and high luminosity dwarfs including Vz stars and stars known to display qualitatively weak winds. Atmosphere models including non-LTE treatment, spherical expansion and line blanketing are computed with the code CMFGEN (Hillier & Miller 1998). Both UV and Hlines are used to derive wind… 
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What Do We Really Know About the Winds of Massive Stars?
  • D. Hillier
  • Physics
    Proceedings of the International Astronomical Union
  • 2007
Abstract The standard theory of radiation driven winds has provided a useful framework to understand stellar winds arising from massive stars (O stars, Wolf-Rayet stars, and luminous blue variables).


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