On the Maximum Binary Fraction in Globular Cluster Cores
| dc.creator | Ivanova, N. | |
| dc.creator | Belczynski, K. | |
| dc.creator | Fregeau, J. M. | |
| dc.creator | Rasio, F. A. | |
| dc.date | 2003-12-18 | |
| dc.date.accessioned | 2026-07-07T02:11:38Z | |
| dc.date.available | 2026-07-07T02:11:38Z | |
| dc.description | We study the evolution of binary stars in globular clusters using a novel approach combining a state-of-the-art population synthesis code with a simple treatment of dynamical interactions in the dense cluster core. We find that the combination of stellar evolution and dynamical interactions (binary-single and binary-binary) leads to a rapid depletion of the binary population in the cluster core. The maximum binary fraction today in the core of a typical dense cluster like 47 Tuc, assuming an initial binary fraction of 100%, is only about 5%. We show that this is in good agreement with recent HST observations of close binaries in the core of 47 Tuc, provided that a realistic distribution of binary periods is used to interpret the results. Our findings also have important consequences for the dynamical modeling of globular clusters, suggesting that ``realistic models'' should incorporate much larger initial binary fractions than has usually been done in the past. | |
| dc.description | 4 pages, ApJ style, 2 figures, 2 tables, ApJL submitted | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0312497 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0312497 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/7164 | |
| dc.subject | Astrophysics | |
| dc.title | On the Maximum Binary Fraction in Globular Cluster Cores | |
| dc.type | text |