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Observations of Radially Expanding Stratified Atmospheres of Wolf-Rayet Stars
Published online by Cambridge University Press: 14 August 2015
Abstract
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