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Are there prominences around binary systems?

Published online by Cambridge University Press:  25 May 2016

R. D. Jeffries
R. D. Jeffries*
Affiliation:
Department of Physics, Keele University, Keele, Staffordshire ST5 5BG, UK School of Physics and Space Research, University of Birmingham, Birmingham B15 2TT, UK

Abstract

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I examine the possibility that large, cool prominences can be formed in close binary systems, when coronal structures grow beyond the point where centrifugal force balances gravitational attraction. X-ray light curves of the eclipsing binary XY UMa indicate that an extended corona is probably present and this is likely to reach heights > 1.5 R⊙, where centrifugal compression may render plasma in the coronal loop apexes unstable to thermal perturbations. Cool condensations could form, explaining features such as the dips in the X-ray light curves of V471 Tau, and the circumstellar material deduced to be present in several close binary systems.

Type
Session IV: “Outer Atmospheric Structure”
Information
Symposium - International Astronomical Union , Volume 176: Stellar Surface Structure , 1996 , pp. 461 - 468
Copyright
Copyright © Kluwer 1996 

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