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The Light and Velocity Curve Bumps for BW Vulpeculae

Published online by Cambridge University Press:  12 April 2016

William Dean Pesnell  and
Arthur N. Cox
William Dean Pesnell
Affiliation:
University of Florida
Arthur N. Cox
Affiliation:
Los Alamos Scientific Laboratory

Extract

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BW Vulpeculae (HD 199140) is a well known Beta Cenhei star, with several unusual characteristics. It possesses the largest amplitude in both light and radial velocity variations, of any star in this classification. The most outstanding feature of the observations is a standstill or bump, on the light curve, accompanied by doubled lines in the radial velocity observations. In this paper, we have attempted to explain these phenomena with two different models. Firstly, the resonance mechanism, from Simon and Schmidt, and secondly, a non-linear calculation.

Type
III. β-Cephei and 53 Persei Variables
Information
International Astronomical Union Colloquium , Volume 58: Stellar Hydrodynamics , August 1980 , pp. 337 - 343
Copyright
Copyright © Reidel 1980

References

Beeckmans, F. and Burger, M.: 1977, Astron. Astrophys. 61, p.815.Google Scholar
Campos, A. J. and Smith, M. A.: 1980, Ap. J. 238, p.250.Google Scholar
Castor, J. I.: 1971, Ap. J. 166, p.109.Google Scholar
Cox, J. P. and Giuli, R. T.: 1968, Principles of Stellar Structure Gordon and Breach, Science Publ. Inc. N. Y.Google Scholar
Eggen, O. J.: 1948, Ast. J. 53, p.197.Google Scholar
Goldberg, B. A., Walker, G. A. H. and Odgers, G. J.: 1976, Ast. J. 81, p.433.Google Scholar
Hodson, S. W. and Cox, A. N.: 1980, in Nonradial and Nontinear Stellar Pulsations, ed. Hill, H. A. and Dziembowski, W. A. (Springer-Verlag, Berlin) p.34.Google Scholar
Iben, Icko Jr.: 1965a, Ap. J. 143, p.516.Google Scholar
Iben, Icko Jr.: 1965b, Ap. J. 143, p.505.Google Scholar
Jakate, S. M.: 1979, Astron. Astrophys. 84, p.374.Google Scholar
Jakate, S. M.: 1980, Ast. J. 84, p.552.Google Scholar
King, D. S., Cox, A. N. and Hodson, S. W.: 1980, LASL Preprint LA-UR-80-1870.Google Scholar
Lamb, S. A., Iben, Icko Jr. and Howard, W. M.: 1976, Ap. J. 207, p.209.Google Scholar
Lane, M. C. and McAlary, C. W.: 1980, unpublished communication.Google Scholar
Ledoux, P. and Walraven, T. H.: 1958, Handbuch der Physih, Bd 51, ed. Flugge, S. (Springer-Verlag, Berlin), p.468.Google Scholar
Lesh, J. R. and Aizenman, M. L.: 1974, Astron Astrophys. 34, p.203.Google Scholar
Lesh, J. R. and Aizenman, M. L.: 1978, Ann. Rev. Astron. Astrophys. 16, p.215.CrossRefGoogle Scholar
Simon, N. R. and Schmidt, E. G.: 1976, Ap. J. 205, p.162.Google Scholar
Stobie, R. S. 1969a M. N. R. A. S. 144, p.485.Google Scholar
Stobie, R. S. 1969b M. N. R. A. S. 144, p.511.Google Scholar
Watson, R. D. 1972, Ap. J. Suppl. 24, p.167.Google Scholar