Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-10-05
Astronomy and Astrophysics
Astrophysics
6 pages, 4 figures. Submitted to Astronomical Notes for the special issue containing the proceedings of the "Ultra low-mass st
Scientific paper
10.1002/asna.200510462
Recent observations of nearby star forming regions have offered evidence that young brown dwarfs undergo a period of mass accretion analogous to the T Tauri phase observed in young stars. Brown dwarf analogs to stellar protostars, however, have yet to be definitively observed. These young, accreting objects would shed light on the nature of the dominant brown dwarf formation process, as well as provide ideal laboratories to investigate the dependence of the accretion mechanism on protostellar mass. Recent near infrared surveys have identified candidate proto-brown dwarfs and characterized low mass protostars in nearby star forming regions. These techniques allow near infrared spectra to diagnose the effective temperature, accretion luminosity, magnetic field strength and rotation velocity of young low mass stars across the stellar/substellar boundary. The lowest mass proto-brown dwarfs (M < 40 M_Jup), however, will prove challenging to observe given current near IR observational capabilities.
Covey Kevin R.
Doppmann Greg W.
Greene Thomas P.
Lada Charles J.
Wilking Bruce A.
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