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The formation of primordial binaries in globular clusters by star-disk interactionsThe formation of primordial binaries in globular clusters is examined using simple numerical models. Clusters of protostars collapse until their velocity dispersion rises sufficiently to reverse the infall and the cluster reaches equilibrium. During the collapse, interactions between stars and protostellar disks lead to stellar capture. It is found that binary fraction of a few percent typically result. Binary formation is terminated when the velocity dispersion rises to a point at which most encounters result in disk destruction rather than capture. As a result, much gas is returned to the cluster ISM, limiting the star formation efficiency to a value significantly below 100 percent.
Document ID
19920033869
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Murray, Stephen D.
(Leander McCormick Observatory Charlottesville, VA, United States)
Clarke, C. J.
(Cambridge University Institute of Astronomy, United Kingdom)
Pringle, J. E.
(Space Telescope Science Institute Baltimore, MD, United States)
Date Acquired
August 15, 2013
Publication Date
December 10, 1991
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 383
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
92A16493
Funding Number(s)
CONTRACT_GRANT: NAGW-764
Distribution Limits
Public
Copyright
Other

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