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Truncation of the Binary Distribution Function in Globular Cluster Formation

Published online by Cambridge University Press:  25 May 2016

E. Vesperini
Affiliation:
Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa-Italy
D.F. Chernoff
Affiliation:
Department of Astronomy, Space Science Building, Cornell University 14853 Ithaca, (New York) USA

Extract

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Recent observational searches suggest that the frequency of primordial binaries in globular clusters may reach ~ 10% (see Hut et al. 1992 for a review). Several different treatments conclude that primordial binaries are effective in halting core collapse, supporting the core and driving the post-core collapse expansion phase (Goodman & Hut 1989, McMillan et al. 1990, 1991, Gao et al. 1991, Heggie & Aarseth 1992, McMillan & Hut 1994). The abundance and binding energy distribution have a direct impact on observable characteristics of globular clusters such as the size of the core radius (Vesperini & Chernoff 1994). In this analysis we have investigated how the initial binary distribution function may be altered in the formation of a cluster; the key question we have addressed is whether it is possible for binaries, assumed to be primordial, to survive the birth of the cluster. A detailed description of our results is in Vesperini & Chernoff (1995).

Type
Galactic Connection and Environmental Effects
Copyright
Copyright © Kluwer 1996 

References

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