Binary-single-star scattering .7. Hard binary exchange cross sections for arbitrary mass ratios: Numerical results and semianalytic fits

被引：92

作者：

Heggie, DC

Hut, P

McMillan, SLW

机构：

[1] INST ADV STUDY,PRINCETON,NJ 08540

[2] DREXEL UNIV,DEPT PHYS & ATMOSPHER SCI,PHILADELPHIA,PA 19104

来源：

ASTROPHYSICAL JOURNAL | 1996年 / 467卷 / 01期

关键词：

binaries; general; celestial mechanics; stellar dynamics; pulsars; stars; evolution;

D O I：

10.1086/177611

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the first comprehensive fitting formula for exchange reactions of arbitrary mass ratios. In a comparison with numerical results, this expression is shown to be accurate in the hard binary limit to within 25% for most mass ratios. The result will be useful in forming quantitative estimates for the branching ratios of various exchange reactions in astrophysical applications. For example, it can be used to construct quantitative formation scenarios for unusual objects in globular clusters, such as binaries containing a pulsar.

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页码：359 / 369

页数：11

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