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New Observational Clues on Binary Formation in the Galaxy

Published online by Cambridge University Press:  14 August 2015

David W. Latham
David W. Latham*
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street Cambridge, Massachusetts 02138, U.S.A.

Abstract

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New observations of binaries are beginning to provide new clues on the formation and evolution of binary and multiple systems in a variety of stellar populations in the Galaxy. New orbital determinations are shedding light on the frequency and orbital characteristics of binaries in the disk and the halo of our Galaxy, both in clusters and the field. These results support the view that the formation of binaries involving solar-mass stars is relatively independent of the stellar environment. Evolutionary effects can have a major influence for close binaries with periods up to at least ten days, with a strong dependence on the age of the population. Progress towards determining the frequency of low-mass companions and planetary systems is promising but still very limited.

Type
Joint Discussions
Information
Highlights of Astronomy , Volume 8: Highlights of Astronomy. As presented at the XXth General Assembly of the IAU, 1988 , 1989 , pp. 103 - 107
Copyright
Copyright © Kluwer 1989

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