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

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

2002-06-05

arxiv.org/abs/astro-ph/0206086v1

Astronomy and Astrophysics

Astrophysics

to appear in proceedings of the IAU Symposium 211 on "Brown Dwarfs", ASP Conference Series

Scientific paper

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 sigma 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.

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