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The iron curtain of the WC 9 star HD l64270

Published online by Cambridge University Press:  12 April 2016

Karel A. van der Hucht  and
Peter S. Conti
Karel A. van der Hucht
Affiliation:
Space Research Laboratory, Utrecht, The Netherlands
Peter S. Conti
Affiliation:
Joint Institute of Laboratory Astrophysics, Boulder Co., USA

Abstract

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The emission lines in the optical and UV spectrum of the WC 9 star HD 164270 indicate a terminal velocity of its wind of v∞ ≈ 1400 km s-1. In the UV spectrum Fe III absorption lines appear from transitions with metastable lower levels. Because they are displayed over only 830 km s-1, it is suggested that they are formed in the decelerating part of the wind. A radius of 1.8 x 104 R⊙, is found for the circumstellar Fe III shell. This value is within the range of radii calculated by Cohen et al. (1975) for the dust shells of WC 9 stars.

Type
Session I - Winds from Early Type Stars: Observations
Information
International Astronomical Union Colloquium , Volume 59: Effects of Mass Loss on Stellar Evolution , 1981 , pp. 35 - 37
Copyright
Copyright © Reidel 1981

References

Literature

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