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FK Comae and the Evolution of Close Binaries

Published online by Cambridge University Press:  07 August 2017

David P. Huenemoerder ,
Lawrence W. Ramsey ,
Derek L. Buzasi  and
Harold L. Nations
David P. Huenemoerder
Affiliation:
Jet Propulsion Laboratory
Lawrence W. Ramsey
Affiliation:
Pennsylvania State University
Derek L. Buzasi
Affiliation:
Johns Hopkins University
Harold L. Nations
Affiliation:
Franklin and Marshall University

Abstract

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FK Com is an enigma among active cool stars. A rotationally driven magnetic dynamo is an explanation for activity. Youth and binarity are two causes of rapid rotation, but FK Com is old, single, and rotating near breakup. Much studied optical and ultraviolet data have not revealed the cause of its unusual activity. It is an important object in a more complete understanding of close binary star evolution and of the dynamo theory of magnetic activity. In 1989, we executed a coordinated ultraviolet and intensive optical spectroscopic and photometric campaign to better elucidate its characteristics. Data relevant to its evolutionary status, namely its radial velocity variations, will be discussed here, while an in depth study of the chromospheric activity will be deferred to a more detailed publication.

Type
Oral and Contributed Papers
Information
Symposium - International Astronomical Union , Volume 151: Evolutionary Processes in Interacting Binary Stars , 1992 , pp. 403 - 406
Copyright
Copyright © Kluwer 1992 

References

Barnes, T.G., Evans, D.S., and Moffett, T.J., 1978, MNRAS , 183, 285.Google Scholar
Bianchi, L., and Grewing, M., 1985, A&A , 283, 200.Google Scholar
Bond, H., 1991, private communication. Google Scholar
Buzasi, D.L., 1987, in Cool Stars, Stellar Systems, and the Sun, Proceedings of the Fifth Cambridge Workshop , edited by Linsky, J. and Stencel, R., p. 518.Google Scholar
Chugainov, P. F., 1976, Izv. Krymsk. Ap. Obs. , 54, 89.Google Scholar
Eggen, O.J., and Iben, I., 1988, in Progress and Opportunities in Southern Hemisphere Optical Astronomy , ed. Blanco, V.M. and Phillips, M.M., A.S.P. Conf. Ser., 1, 239 Google Scholar
McCarthy, J.K., and Ramsey, L.W., 1984, Ap. J. , 283, 200.Google Scholar
Taam, R.E., and Bodenheimer, P., 1989, Ap. J. , 337, 849.Google Scholar
Tout, C.A., and Eggleton, P.P., 1988, Ap. J. , 334, 357.CrossRefGoogle Scholar
Walter, F.M., and Basri, G., 1982, Ap. J. , 260, 735.Google Scholar
Webbink, R.F., 1976, Ap. J. , 209, 829.CrossRefGoogle Scholar