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Statistics of Double and Multiple Stars in the Solar Neighborhood1

Published online by Cambridge University Press:  12 April 2016

Victor V. Orlov  and
Oleg A. Titov
Victor V. Orlov
Affiliation:
Astronomical Observatory, St. Petersburg University, Bibliotechnaya pl. 2, 19890, St. Petersburg Petrodvorets, Russia
Oleg A. Titov
Affiliation:
Institute of Applied Astronomy, Russian Academy of Sciences, Zhdanovskaya st. 8, 197042, St. Petersburg, Russia

Abstract

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We study the multiplicity function and physical properties of single, double, and multiple stellar systems in the solar neighbourhood (r < 10 pc), using a new preliminary machine–readable version of the Gliese & Jahreiss Catalogue (1991).

The ratio of (n+l)-ple to n-ple systems is a constant fraction of about 1/4 for n =1, 2, 3, 4. The luminosity function f(M) for primaries in binaries has an additional peak at M є (6m,8m) that is absent in f(M) for single stars and secondary components. A significant correlation between the absolute magnitudes M1 and M2 of the components in binaries takes place.

Type
Classical Methods, Catalogs, & Databases
Information
International Astronomical Union Colloquium , Volume 135: Complementary Approaches to Double and Multiple Star Research , 1992 , pp. 343 - 345
Copyright
Copyright © Astronomical Society of the Pacific 1992

Footnotes

1

The authors of this paper were unable to attend the Colloquium — eds.

References

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