Binary multiplication: The formation of close binaries from wide ones

Watkins, Stephen, BhattaL, Amardeep, Francis, Neil and Whitworth, Anthony Peter ORCID: https://orcid.org/0000-0002-1178-5486 1997. Binary multiplication: The formation of close binaries from wide ones. Presented at: Star formation, near and far : seventh Astrophysics Conference, College Park, MD, 14-16 October 1996. Published in: Holt, Stephen S. and Mundy, Lee G. eds. Star Formation, Near and Far: Seventh Astrophysics Conference (AIP Conference Proceedings). AIP Conference Proceedings (393) Woodbury, N.Y.: American Institute of Physics, pp. 367-370. 10.1063/1.52772

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Abstract

We hypothesize that the masses of stars and the statistics of binary systems are largely determined by interactions between extended massive protostellar discs in dense protoclusters. We present simulations which show that collisions between extended massive protostellar discs in wide binary systems are very effective at forming smaller binary systems. Therefore one can envisage an hierarchical cascade, which starts with a small-N cluster of predominantly long-period systems, and then by stages multiplies and populates shorter periods. Our simulations indicate that each generation in this proposed hierarchical cascade should approximately double the number of protostellar discs, and produce binaries with periods about an order of magnitude shorter than their parents.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Publisher:	American Institute of Physics
ISBN:	9781563966781
ISSN:	0094-243X
Last Modified:	28 Oct 2022 09:03
URI:	https://orca.cardiff.ac.uk/id/eprint/73130

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