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Atmospheric Shock Effects in Early B Stars

Published online by Cambridge University Press:  25 April 2016

P. A. Stamford  and
R. D. Watson
P. A. Stamford
Affiliation:
Department of Physics, University of Tasmania
R. D. Watson
Affiliation:
Department of Physics, University of Tasmania
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Extract

Both radial and non-radial motions have been suggested at various stages to explain the observational peculiarities of the β Cephei variables. The non-radial possibility has been investigated most recently by Smith (1977) and Stamford and Watson (1977). We here examine the radial shock proposal by generating a series of isothermal radial shock models in suitable early B star atmospheres. Odgers (1955) has long advocated such a model in connection with the large amplitude variable BW Vul. The observations of Goldberg, Walker and Odgers (1976) clearly show a radial velocity ‘stillstand’ effect and line splitting in this star. We discuss our models in the context of these two phenomena.

Type
Galactic
Information
Publications of the Astronomical Society of Australia , Volume 3 , Issue 4 , 1978 , pp. 273 - 275
Copyright
Copyright © Astronomical Society of Australia 1978

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References

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