The formation of hierarchical triple systems by single-star-binary encounters

Journal Article · Thu Jun 01 00:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167482· OSTI ID:5643569

Bailyn, C D ^[1]

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1. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (USA)

The possible formation of bound hierarchical triple systems in globular clusters by encounters between single stars and binaries formed by tidal capture is considered. The first step in forming such systems must be the formation of temporarily bound hierarchical resonances. This paper explores the creation of such resonance systems in the context of globular clusters, taking into account both point mass and tidal effects. Numerical simulations show that relatively long-lasting systems can be formed, but only in retrograde or near retrograde orbits. A total cross section for the formation of relatively long-lasting triples on the order of that for the formation of tidal capture binaries is determined. The very low energy of the incoming stars appropriate for interactions in globular clusters is crucial for the formation process. 33 refs.

• OSTI ID: 5643569
• Journal Information: Astrophysical Journal; (USA), Vol. 341; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINARY STARS
GRAVITATIONAL INTERACTIONS
STARS
MASS
MONTE CARLO METHOD
NUMERICAL ANALYSIS
ORBITS
ORIGIN
SIMULATION
STAR CLUSTERS
STAR EVOLUTION
BASIC INTERACTIONS
INTERACTIONS
MATHEMATICS
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources