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The Formation of Close Binary Stars

Published online by Cambridge University Press:  13 May 2016

Ian A. Bonnell
Ian A. Bonnell*
Affiliation:
University of St Andrews, Physics and Astronomy, North Haugh, St Andrews, KY16 9SS, UK

Abstract

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I review the possible formation mechanisms of close binary stars. The formation of close binary systems is problematic in that there is no theory that does not encounter significant difficulties or unknowns. Fission does not appear to occur in stars. Capture is unlikely to form many close binary systems except possibly amongst massive stars. Fragmentation can form close binary systems but these need to accrete the majority of their eventual mass. Furthermore, there appears to be a limited window in initial conditions that may preclude forming sufficient systems in this way. Possible alternatives include the orbital migration of a binary due to its circumbinary disk and the disintegration of a non-hierarchical multiple system.

Type
II. Theoretical Context: The Big Picture
Information
Symposium - International Astronomical Union , Volume 200: The Formation of Binary Stars , 2001 , pp. 23 - 32
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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