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Discrete absorption components in O-type stars

  • Ian D. Howarth
III. Stellar Winds and Massive Stars
Part of the Lecture Notes in Physics book series (LNP, volume 401)

Abstract

The primary observational characteristics of variability in UV P-Cygni lines of O stars are illustrated. ‘Narrow components’ seen in almost all spectra are just one aspect of discrete absorption components, or DACs. The blueshifted DACs develop at ∼0.5v∼8 and then migrate to higher velocities; their production is probably related to the line-driven instability.

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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • Ian D. Howarth
    • 1
  1. 1.Department of Physics and AstronomyUniversity College LondonLondon

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