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Observations of Radially Expanding Stratified Atmospheres of Wolf-Rayet Stars

Published online by Cambridge University Press:  14 August 2015

W. Seggewiss
W. Seggewiss*
Affiliation:
Observatorium Hoher List der Universitäts-Sternwarte Bonn, F.R.G.

Abstract

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A correlation between lower excitation potential and radial velocity of violet-displaced absorption components in the spectra of Wolf-Rayet stars is established. The relationship supports the concept of a radially expanding stratified atmosphere in which the expansion velocity increases outwards. The outermost layers of the atmosphere of one star (HD 151932, WN7) display oscillations with a periodicity of about 3.5 days.

Type
Part 5 / Wolf-Rayet Stars
Information
Symposium - International Astronomical Union , Volume 67: Variable Stars and Stellar Evolution , 1975 , pp. 285 - 289
Copyright
Copyright © Reidel 1975 

References

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