Abstract
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.
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© 1981 D. Reidel Publishing Company
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van der Hucht, K.A., Conti, P.S. (1981). The Iron Curtain of the WC 9 Star HD 164270. In: Chiosi, C., Stalio, R. (eds) Effects of Mass Loss on Stellar Evolution. Astrophysics and Space Science Library, vol 89. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-8500-1_4
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DOI: https://doi.org/10.1007/978-94-009-8500-1_4
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