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A Search for Disk Emission in Young Brown Dwarfs: L'-band Observations of σ Orionis and TW Hydrae

Published online by Cambridge University Press:  26 May 2016

Ray Jayawardhana ,
David R. Ardila  and
Beate Stelzer
Ray Jayawardhana
Affiliation:
Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, U.S.A.
David R. Ardila
Affiliation:
Department of Astronomy, University of California, Berkeley, CA 94720, U.S.A.
Beate Stelzer
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, 85741 Garching, Germany

Abstract

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Studies of disks around young brown dwarfs are of paramount importance to our understanding of the origin, diversity and early evolution of sub-stellar objects. Here we present first results from a systematic search for disk emission in a spectroscopically confirmed sample of young objects near or below the sub-stellar boundary in a variety of star-forming regions. Our VLT and Keck L'-band observations of the σ Orionis and TW Hydrae associations suggest that if a majority of brown dwarfs are born with disks, at least the inner regions of those disks evolve rapidly, possibly clearing out within a few million years.

Type
Part 3. Circumsubstellar Matter
Information
Symposium - International Astronomical Union , Volume 211: Brown Dwarfs , 2003 , pp. 139 - 140
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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