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What Can We Learn about Contact Binaries with the Help of Far UV and X-Ray Observations?

Published online by Cambridge University Press:  30 March 2016

Osmi Vilhu
Osmi Vilhu*
Affiliation:
Observatory and Astrophysics Laboratory, University of Helsinki, Finland

Extract

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The IUE and Einstein satellites have changed the clean and simple contact binary (W UMa-type) surface to a more “dirty” one where spots, flux tubes, coronal loops, flares etc. disturb the stellar image. The situation is, of course, the same for many other active stars as well. Here we discuss some aspects of this increased activity which may be relevant for the contact binary evolutionary theory.

Type
Joint Commission Meetings
Information
Highlights of Astronomy , Volume 6: Highlights of Astronomy. As presented at the XVIIIth General Assembly of the IAU, 1982 , 1983 , pp. 643 - 644
Copyright
Copyright © Reidel 1983

References

Rahunen, T. and Vilhu, O. (1982), Origin and Evolution of Contact Binaries of W UMa Type, IAU Coll. 69, p. 289.Google Scholar
Rucinski, S.M. and Vilhu, O. (1982), IUE Observations of W UMa-type Stars, MNRAS (in press).Google Scholar
Rucinski, S.M., Vilhu, O. and Kaluzny, J. (1982), Activity of Contact Binaries, IAU Coll. No. 71.Google Scholar
Vilhu, O. and Rucinski, S.M. (1982), Period-Activity Connections in Close Binaries, Astron. Astrophys. (submitted).Google Scholar