Slicing & Dicing The Binary Rate: All Stars are Binaries! (of some sort)

Details Slicing & Dicing The Binary Rate: All Stars are Binaries! (of some sort) Slicing & Dicing The Binary Rate: All Stars are Binaries! (of some sort)

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20510701o&link_type=abstract

American Astronomical Society Meeting 205, #107.01; Bulletin of the American Astronomical Society, Vol. 36, p.1524

Astronomy and Astrophysics

Astronomy

Scientific paper

I evaluate the rate of known binaries in past and present catalogs. The binarity/multiplicity rate is a strong function of both distance and apparent magnitude, suggesting that strong selection effects are at work. The sample of brightest & closest stars have a binary rate of 90-95%. Angular momentum considerations suggest that star formation is not possible without "dumping" the initial angular momentum of the proto-stellar cloud onto a compaion. We thus suggest that in fact 100% of stars are member of a multiple system, where the companion(s) may be either/or/and stars, brown dwarf, or planets.

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