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Star-disk interaction in brown dwarfs: implications for substellar formation

Published online by Cambridge University Press:  01 May 2007

Subhanjoy Mohanty
Subhanjoy Mohanty*
Affiliation:
Harvard-Smithsonian CfA, 60 Garden Street, M.S.42, Cambridge, MA 02138, USA email: [email protected]
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Abstract

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I review the current state of knowledge regarding disk accretion in young brown dwarfs (BDs), and the interaction of the disk with the central object. In particular, I discuss (1) observations of accretion/outflow phenomena in BDs; (2) techniques for measuring accretion rates (Ṁacc); (3) the dependence of Ṁacc on the central mass from stars to brown dwarfs; (4) the temporal evolution of Ṁacc; and (5) observations of variability in the accretion line profiles. I then examine the implications of these issues for the formation mechanism of BDs, and discuss new observations that can further constrain substellar origins.

Keywords

Circumstellar matterplanetary systemsstars: formationstars: low-massbrown dwarfsstars: pre-main-sequence
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S243: Star-Disk Interaction in Young Stars , May 2007 , pp. 345 - 356
Copyright
Copyright © International Astronomical Union 2007

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