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Hot Mantles, Moderate Photospheres for Wolf-Rayet Stars

Published online by Cambridge University Press:  14 August 2015

Anne B. Underhill
Anne B. Underhill*
Affiliation:
Laboratory for Astronomy and Solar Physics Goddard Space Flight Center, Greenbelt, Mr 20771

Abstract

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The amount of continuous energy from Wolf-Rayet stars and the shape of the continuous spectrum from the ultraviolet to the near infrared correspond to effective temperatures in the range 25000 to 30000 K. The value of log g is of the order of 4.0±0.5. Thus the photospheres of Wolf-Rayet stars correspond to those of moderately hot stars. The line spectra of Wolf-Rayet stars, however, indicate that electron temperatures greater than 30000 K occur in the outer atmospheres or mantles of these stars. Here outflow is important.

Type
SESSION 1 — THE WOLF-RAYET PHENOMENON
Information
Symposium - International Astronomical Union , Volume 99: Wolf-Rayet Stars: Observations, Physics, Evolution , 1982 , pp. 47 - 51
Copyright
Copyright © Reidel 1982 

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