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Brown dwarfs forming in discs: Where to look for them?

Stamatelos, Dimitrios and Whitworth, Anthony Peter 2011. Brown dwarfs forming in discs: Where to look for them? EPJ Web of Conferences 16 , 05001. 10.1051/epjconf/20111605001

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Abstract

A large fraction of the observed brown dwarfs may form by gravitational fragmentation of unstable discs. This model reproduces the brown dwarf desert, and provides an explanation for the existence of planetary-mass objects and for the binary properties of low-mass objects. We have performed an ensemble of radiative hydrodynamic simulations and determined the statistical properties of the low-mass objects produced by gravitational fragmentation of discs. We suggest that there is a population of brown dwarfs loosely bound on wide orbits (100–5000 AU) around Sun-like stars that surveys of brown dwarf companions should target. Our simulations also indicate that planetary-mass companions to Sun-like stars are unlikely to form by disc fragmentation.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Additional Information: Research, Science and Technology of Brown Dwarfs and Exoplanets: Proceedings of an International Conference held in Shangai on Occasion of a Total Eclipse of the Sun. 6 Page Article. Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/2100-014X/ (accessed 17/04/2014)
Publisher: EDP Sciences
ISSN: 2100-014X
Date of First Compliant Deposit: 30 March 2016
Last Modified: 04 Jun 2017 03:40
URI: http://orca.cf.ac.uk/id/eprint/24744

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