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The formation of brown dwarfs

Whitworth, Anthony Peter and Goodwin, S. P. 2005. The formation of brown dwarfs. Astronomische Nachrichten 326 (10) , pp. 899-904. 10.1002/asna.200510447

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We review four mechanisms for forming brown dwarfs: (i) turbulent fragmentation (producing very low-mass prestellar cores); (ii) gravitational instabilities in discs; (iii) dynamical ejection of stellar embryos from their placental cores; and (iv) photo-erosion of pre-existing cores in HII regions. We argue (a) that these are simply the mechanisms of low-mass star formation , and (b) that they are not mutually exclusive. If, as seems possible, all four mechanisms operate in nature, their relative importance may eventually be constrained by their ability to reproduce the binary statistics of brown dwarfs, but this will require fully 3-D radiative magneto-hydrodynamic simulations. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: stars:formation ; stars:brown dwarfs
Publisher: Wiley
ISSN: 0004-6337
Last Modified: 04 Jun 2017 04:56

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