The formation of brown dwarfs in discs: Physics, numerics, and observations

Stamatelos, Dimitrios and Whitworth, Anthony Peter ORCID: https://orcid.org/0000-0002-1178-5486 2010. The formation of brown dwarfs in discs: Physics, numerics, and observations. Proceedings of the International Astronomical Union 6 (S270) , pp. 223-226. 10.1017/S174392131100041X

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Abstract

A large fraction of brown dwarfs and low-mass stars may form by gravitational fragmentation of relatively massive (a few 0.1 M⊙) and extended (a few hundred AU) discs around Sun-like stars. We present an ensemble of radiative hydrodynamic simulations that examine the conditions for disc fragmentation. We demonstrate that this model can explain the low-mass IMF, the brown dwarf desert, and the binary properties of low-mass stars and brown dwarfs. Observing discs that are undergoing fragmentation is possible but very improbable, as the process of disc fragmentation is short lived (discs fragment within a few thousand years).

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Advanced Research Computing @ Cardiff (ARCCA) Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Uncontrolled Keywords:	Stars: formation – Stars: low-mass; brown dwarfs – accretion; accretion disks – Methods: Numerical; Radiative transfer; Hydrodynamics
Additional Information:	Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/1743-9213/ (accessed 21/02/2014).
Publisher:	Cambridge University Press
ISSN:	1743-9213
Date of First Compliant Deposit:	30 March 2016
Last Modified:	10 May 2023 08:50
URI:	https://orca.cardiff.ac.uk/id/eprint/22057

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