The formation of primordial binaries in globular clusters by star-disk interactions

Details The formation of primordial binaries in globular clusters by star-disk interactions The formation of primordial binaries in globular clusters by star-disk interactions

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...383..192m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 383, Dec. 10, 1991, p. 192-197.

Computer Science

Numerical Analysis

11

Binary Stars, Globular Clusters, Protostars, Star Formation, Stellar Evolution, Stellar Motions, Gravitational Collapse, Mathematical Models, Numerical Analysis

Scientific paper

The 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.

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