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On Stothers’ and Simon’s Binary-Star Hypothesis for Beta Canis Majoris Star Pulsation

Published online by Cambridge University Press:  12 April 2016

John R. Percy  and
Katherine Madore

Extract

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The β CMa stars are short-period pulsating variable stars lying slightly above the upper main sequence. Although they have been known and studied for 70 years, little is known about the nature and cause of their pulsation.

STOTHERS and SIMON (1969) have recently advanced an hypothesis – hereinafter known as the hypothesis – which proposes that all β CMa stars are the former secondary components of massive binary systems. The former primary components, being more massive, have evolved first, have shed their envelopes by rapid mass loss, and have deposited helium-enriched material from their cores upon the surfaces of the secondary components. This causes the secondary components (now the primary components) to become unstable, via the so-called „μ-mechanism“, to nuclear-energized radial pulsations.

Type
IV. Duplicity and its Consequences among the Intrinsic Variable Stars
Information
International Astronomical Union Colloquium , Volume 15: New Directions and Frontiers in Variable Stars Research , 1971 , pp. 197 - 203
Copyright
Copyright © Cambridge University Press 1971

References

Aller, L. H., 1971, paper presented to the New York Academy of Sciences.Google Scholar
Breger, M., 1967, M.N.R.A.S. 136, 51.Google Scholar
Cousins, A. J., 1966, M.N.R.A.S. 131, 443.Google Scholar
Fitch, W. S., 1969, Ap. J. 158, 269.CrossRefGoogle Scholar
Grabowski, B., 1969, Acta Astron. 19, 23.Google Scholar
Grant, G., 1959, Ap. J., 129, 78.CrossRefGoogle Scholar
Heard, J. F., and Fernie, J. D., 1968, J. Roy, Ast. Soc. Canada 62, 99.Google Scholar
Herbison-Evans, D., Hanbury Brown, R., Davis, J., and Allen, L. R., 1971, and Allen, L. R., 1971, M.N.R.A.S. 151, 161.Google Scholar
Hill, G., 1967, Ap. J. Suppl. 14, 263.Google Scholar
Kippenhahn, R., 1970, Trans. I.A.U. 14A. Google Scholar
Laskarides, P. G., Odgers, G. J., and Climenhaga, J. L., 1971, A. J. 78, 363.Google Scholar
Lynds, C. R., 1959, Ap. J., 130, 577.CrossRefGoogle Scholar
Lynds, C. R., Sahade, J., and Struve, O., 1956, Ap. J. 124, 321.Google Scholar
McNamara, D. H., 1955, Ap. J. 122, 95.Google Scholar
Miczaika, G. R., 1963, Publ. Ast. Soc. Pacific 65, 141.Google Scholar
Münch, G., and Flather, E., 1967, Publ. Ast. Soc. Pacific 69, 142.Google Scholar
Norris, J., 1971, Ap. J. Suppl, 23, 193.Google Scholar
Pagel, B. E. J., 1956, M.N.R.A.S., 116, 10.CrossRefGoogle Scholar
Percy, J. R., 1969, J. Roy, Ast. Soc. Canada 63, 233.Google Scholar
Percy, J. R., 1970, Ap. J. 159, 177.Google Scholar
Peters, G., 1971, private communication.Google Scholar
Petrie, R. M., 1954, Publ. Dom. Ast. Obs. 10, 39.Google Scholar
Plavec, M., 1971, Publ. Ast. Soc. Pacific 83, 144.CrossRefGoogle Scholar
Popper, D. M., 1954, Ap. J. 121, 56.Google Scholar
Seeds, M. 1970, unpublished Ph. D. thesis, Indiana University.Google Scholar
Shipman, H. L., and Strom, S. E., 1969, Bull. Am. Ast. Soc. 1, 362.Google Scholar
Shobbrook, R. R., and Robertson, J. W., 1968, Proc. Ast. Soc. Australia 1, 82.CrossRefGoogle Scholar
Smak, J., 1970, Acta Astron. 20, 75.Google Scholar
Smith, A., 1967, Ap. J. 147, 158.Google Scholar
Stibbs, D. W., 1948, M.N.R.A.S. 108, 398.Google Scholar
Stothers, R., and Simon, N. R., 1969, Ap. J. 157, 673.CrossRefGoogle Scholar
Stothers, R., and Simon, N. R., 1970, Publ. Ast. Soc. Pacific 82, 707.Google Scholar
Struve, O., McNamara, D. H., Kraft, R. P., Kung, S. M., and Williams, A. D., 1952a, Ap. J. 116, 81.Google Scholar
Struve, O., McNamara, D. H., Kung, S. M., and Beymer, C., 1953, Ap. J. 118, 39.CrossRefGoogle Scholar
Struve, O., McNamara, D. H., Kung, S. M., Van Hoof, A., and Deurinck, R., 1954, Ap. J. 119, 168.Google Scholar
Struve, O., McNamara, D. H., Kung, S. M., Kraft, R. P., and Williams, A. D., 1952b, Ap. J. 116, 398.Google Scholar
Struve, O., Sahade, J., Huang, S.-S., and Zebergs, V., 1958, Ap. J. 128, 310.Google Scholar
Struve, O., and Zebergs, V., 1959, Ap. J. 129, 668.Google Scholar
Underhill, A. B., 1966, „The Early Type Stars“ (New York: Gordon and Breach), pg. 157.Google Scholar
Van Gent, H., 1942, Bull. Art. Netherlands 8, 319.Google Scholar
Van Hoof, A., 1967, in „Determinatoin of Radial Velocities and their Applications“, ed. Batten, A. and Heard, J. F. (London and New York: Academic Press), pg. 237.Google Scholar
Van Hoof, A., and Blaauw, A., 1964, Bull. Ast. Netherlands 17, 451.Google Scholar
Watson, R., 1971, Ap. J. in press.Google Scholar