Statistical identification of binaries in star clusters.
نویسندگان
چکیده
منابع مشابه
Simulating young star clusters with primordial binaries
We simulate a cluster of 144179 stars including 13107 primordial hard binaries (10% of the total number of single stars and binary centers of mass), using direct integration of the equations of motion of all stars and binaries and incorporating the effects of stellar and binary evolution. The initial conditions are representative of young dense star clusters in the Local Group and other nearby ...
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We study the compact binary population in star clusters, focusing on binaries containing neutron stars and black holes, using a self-consistent Monte Carlo treatment of dynamics and full stellar evolution. We find that the black holes experience strong mass segregation and become centrally concentrated. In the core the black holes interact strongly with each other and black hole-black hole bina...
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Bright, ultracompact X-ray binaries observed in dense star clusters, such as Galactic globular clusters, must have formed relatively recently, since their lifetimes as persistent bright sources are short (e.g., ∼ 108 yr above 1036 ergs−1 for a 1.4M⊙ neutron star accreting from a degenerate helium companion with an initial mass of ∼ 0.2M⊙). Therefore, we can use the present conditions in a clust...
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Binary stars have long been considered to play a crucial role in globular cluster evolution, and offer the advantages of studying systems at the same, well-determined distances. However, early search attempts were consistently thwarted by crowding (particularly in the optical) and initial detections were limited to small numbers of low-mass X-ray binaries (LMXBs) and a handful of other systems....
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We have carried out a series of small scale collisional N-body calculations of single-mass star clusters to investigate the dependence of the lifetime of star clusters on their initial parameters. Our models move through an external galaxy potential with a logarithmic density profile and they are limited by a cut-off radius. In order to find scaling relations between the lifetime of star cluste...
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ژورنال
عنوان ژورنال: Publications of the Astronomical Society of the Pacific
سال: 1975
ISSN: 0004-6280,1538-3873
DOI: 10.1086/129832