Luminosity distribution function for visual binary stars

Details Luminosity distribution function for visual binary stars Luminosity distribution function for visual binary stars

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.110..143r&link_type=abstract

(Deutsche Forschungsgemeinschaft, Universitaet Bamberg, Universitaet Erlangen-Nuernberg, and Victoria University of Manchester,

Astronomy and Astrophysics

Astrophysics

3

Binary Stars, Distribution Functions, Main Sequence Stars, Star Distribution, Stellar Luminosity, Hot Stars, Mass Ratios, Stellar Color, Three Body Problem

Scientific paper

The 'cosmic scatter' of 147 of the best known visual binary stars on the Main Sequence is discussed and a new estimation of the luminosity distribution function for multiple star systems is presented. As long as the mass ratio q of a close binary is not smaller than 0.5, the distribution of close binary components is identical to the van Rhijn luminosity-function. For smaller mass ratios (q < 0.5) the number of close companions decreases rapidly. It appears that less than 13% of visual binaries in the author's sample are simple binary systems.

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