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Binary multiplication: the formation of close binaries from wide ones

Watkins, S. J., Boffin, H. M. J., Francis, N. and Whitworth, Anthony Peter 1998. Binary multiplication: the formation of close binaries from wide ones. Presented at: Star Formation with the Infrared Space Observatory, Lisbon, Portugal, 24-26 June 1997. Star Formation with the Infrared Space Observatory. ASP Conference Series Astronomical Society of the Pacific, p. 430.

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Abstract

We hypothesize that the final masses of stars, and also the statistics of binary systems, are largely determined by interactions between massive extended protostellar discs in proto-clusters. We present simulations of such interactions, which show that they are very effective at forming binary and higher multiple systems. We envisage an hierarchical cascade, which starts with a small-N cluster of massive extended protostellar discs in relatively wide orbits, and then by stages spawns lower-mass less-extended discs in closer orbits. Our simulations indicate that each generation in this cascade can 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
Uncontrolled Keywords: Star Formation : Binaries
Publisher: Astronomical Society of the Pacific
Last Modified: 04 Jun 2017 07:56
URI: http://orca.cf.ac.uk/id/eprint/70031

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