Terminal Velocities for a Large Sample of O Stars, B Supergiants, and Wolf-Rayet Stars

  title={Terminal Velocities for a Large Sample of O Stars, B Supergiants, and Wolf-Rayet Stars},
  author={Raman K. Prinja and Michael J. Barlow and Ian D Howarth},
It is argued that easily measured, reliable estimates of terminal velocities for early-type stars are provided by the central velocity asymptotically approached by narrow absorption features and by the violet limit of zero residual intensity in saturated P Cygni profiles. These estimators are used to determine terminal velocities, v(infinity), for 181 O stars, 70 early B supergiants, and 35 Wolf-Rayet stars. For OB stars, the values are typically 15-20 percent smaller than the extreme violet… 
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