Binary multiplication: The formation of close binaries from wide ones

Details Binary multiplication: The formation of close binaries from wide ones Binary multiplication: The formation of close binaries from wide ones

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..393..367w&link_type=abstract

The seventh astrophysical conference: Star formation, near and far. AIP Conference Proceedings, Volume 393, pp. 367-370 (1997).

Statistics

Spectroscopic Binaries, Close Binaries, Star Formation, Pre-Main Sequence Objects, Young Stellar Objects And Protostars

Scientific paper

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.

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