Orbital migration and the brown dwarf desert

Details Orbital migration and the brown dwarf desert Orbital migration and the brown dwarf desert

2002-10-08

arxiv.org/abs/astro-ph/0210195v1

Astronomy and Astrophysics

Astrophysics

Proceedings, IAU Symp. 211 on "Brown Dwarfs", ed. E. L. Martin

Scientific paper

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.

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