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Accretion in Very Low Mass Young Objects
Published online by Cambridge University Press: 26 May 2016
Abstract
We have investigated evidence for active accretion in a sample of ~ 30 young, very low mass objects, including at least 10 brown dwarfs. About 30% of the sample exhibits broad, asymmetric Hα emission line profiles, indicative of gas accretion via magnetospheric infall. There is a distinct lack of associated optical continuum veiling in these accretors, suggesting very low mass accretion rates. Our models yield an upper limit to the accretion rates that is several orders of magnitude smaller than typical of higher-mass T Tauri stars, suggesting a dependence of accretion rates with stellar mass.
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- Part 3. Circumsubstellar Matter
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- Copyright © Astronomical Society of the Pacific 2001