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Orbital Migration and the Brown Dwarf Desert

Published online by Cambridge University Press:  26 May 2016

Philip J. Armitage  and
Ian A. Bonnell
Philip J. Armitage
Affiliation:
JILA, 440 UCB, University of Colorado, Boulder CO80309–0440, USA
Ian A. Bonnell
Affiliation:
School of Physics and Astronomy, University of St Andrews, North Haugh, Fife KY16 9SS, UK

Abstract

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The orbital elements of extreme mass ratio binaries will be modified by interactions with surrounding circumstellar disks. For brown dwarf companions to Solar-type stars the resulting orbital migration is sufficient to drive short period systems to merger, creating a brown dwarf desert at small separations. We highlight the similarities and the differences between the migration of brown dwarfs and massive extrasolar planets, and discuss how observations can test a migration model for the brown dwarf desert.

Type
Part 1. Genesis
Information
Symposium - International Astronomical Union , Volume 211: Brown Dwarfs , 2003 , pp. 31 - 34
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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