Mass Segregation in Star Clusters: Analytic Estimation of the Timescale | Zendy

Hideaki Mouri | Zendy; Yoshiaki Taniguchi | Zendy

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Mass Segregation in Star Clusters: Analytic Estimation of the Timescale

Author(s) -

Hideaki Mouri,

Yoshiaki Taniguchi

Publication year - 2002

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/343851

Subject(s) - cluster (spacecraft) , astrophysics , star cluster , star (game theory) , stars , galaxy , trace (psycholinguistics) , physics , initial mass function , component (thermodynamics) , mass distribution , mass segregation , simple (philosophy) , function (biology) , star formation , statistical physics , computer science , quantum mechanics , linguistics , philosophy , programming language , epistemology , evolutionary biology , biology

Mass segregation in a star cluster is studied in an analytical manner. Weconsider a two-component cluster, which consists of two types of stars withdifferent masses. Plummer's model is used for the initial condition. We tracethe overall behaviors of the probability distribution functions of the twocomponents and obtain the timescale of mass segregation as a simple function ofthe cluster parameters. The result is used to discuss the origin of a blackhole with mass of > 1000 M(sun) found in the starburst galaxy M82.Comment: 12 pages, 1 ps file for 2 figures, to appear in The Astrophysical Journa

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