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

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

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007iaus..243..345m&link_type=abstract

Star-Disk Interaction in Young Stars, Proceedings of the International Astronomical Union, IAU Symposium, Volume 243, p. 345-356

Astronomy and Astrophysics

Astronomy

1

Circumstellar Matter, Planetary Systems, Stars: Formation, Stars: Low-Mass, Brown Dwarfs, Stars: Pre-Main-Sequence

Scientific paper

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.

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