Hostname: page-component-7bb8b95d7b-2h6rp Total loading time: 0 Render date: 2024-09-30T07:44:06.836Z Has data issue: false hasContentIssue false

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

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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

Gao, B., Goodman, J., Cohn, H., Murphy, B. (1991) Ap.J. 370, 567 Google Scholar
Goodman, J., Hut, P. (1989) Nature 339, 40 Google Scholar
Heggie, D.C., Aarseth, S.J. (1992) MNRAS 257, 513 Google Scholar
Hut, P., McMillan, S.L., Goodman, J. et al. (1992) Publ. Astron. Soc. Pacific 104, 981 Google Scholar
McMillan, S., Hut, P., Makino, J. (1990) Ap.J. 362, 522 Google Scholar
McMillan, S., Hut, P., Makino, J. (1991) Ap.J. 372, 111 CrossRefGoogle Scholar
McMillan, S., Hut, P. (1994) Ap.J. 427, 793 Google Scholar
Vesperini, E., Chernoff, D.F (1994) Ap.J. 431, 231 Google Scholar
Vesperini, E., Chernoff, D.F. (1995) Ap.J. in press Google Scholar