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Binarity of Hipparcos Main Sequence Survey Stars

Published online by Cambridge University Press:  13 May 2016

Carl F. Quist  and
Lennart Lindegren
Carl F. Quist
Affiliation:
Lund Observatory, Box 43, SE-22100 Lund, Sweden
Lennart Lindegren
Affiliation:
Lund Observatory, Box 43, SE-22100 Lund, Sweden

Abstract

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Hipparcos observations of double stars, mainly A and F primaries, are modelled in order to check the statistics of double-star solutions in the Hipparcos Catalogue and to set quantitative limits on binary distributions. The number of companions per primary is estimated to 0.25 ± 0.05 for semi-major axes from 1 to 10 AU, and to 0.43 ± 0.20 for the range 10–100 AU. The total multiplicity found is between 0.9 and 1.2.

Type
III. Main Sequence Binary Statistics
Information
Symposium - International Astronomical Union , Volume 200: The Formation of Binary Stars , 2001 , pp. 64 - 68
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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