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Duplicity Among Solar-Type Stars

Published online by Cambridge University Press:  12 April 2016

Helmut A. Abt  and
Daryl W. Willmarth
Helmut A. Abt
Affiliation:
Kitt Peak National Observatory, Box 26732, Tucson, AZ 85726, USA
Daryl W. Willmarth
Affiliation:
Kitt Peak National Observatory, Box 26732, Tucson, AZ 85726, USA

Abstract

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From a new study of 113 F8-G1 IV or V primaries in an apparent-magnitude limited sample, measured with a CCD for about 20 radial velocities of accuracy 0.2-0.5 km s−1 each, we collected data for 28 binary orbits and 39 visual systems. We again found a flat distribution (or slightly decreasing toward lower masses) of secondary masses, unlike the Salpeter distribution for B2-B5 stars. But we find that the different distributions for these field stars and for open clusters of various ages can all be explained by a capture mechanism of binary formation.

Type
Spectroscopic Studies
Information
International Astronomical Union Colloquium , Volume 135: Complementary Approaches to Double and Multiple Star Research , 1992 , pp. 82 - 88
Copyright
Copyright © Astronomical Society of the Pacific 1992

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