【摘 要】
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I will discuss the evolution of star clusters with an extremely large binary fraction,up to 95%.The distribution of binary parameters was chosen according t
【出 处】
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国际天文学联合会第312次专题会议
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I will discuss the evolution of star clusters with an extremely large binary fraction,up to 95%.The distribution of binary parameters was chosen according to the hypothesis of universal initial binary population(Kroupa 1995b).The initial and strongly density dependent destruction of wide binaries described by Marks,Kroupa & Oh(2011)was also observed in MOCCA simulations.The MOCCA simulations of star clusters with such a large binary fraction were compared to the observations of Milone et al.(2012)for photometric binaries.It was demonstrated that observed dependences of binary fraction and the ratio of binary fraction inside and outside of the half mass radii on the cluster mass were well recovered by the MOCCA simulations.I will also discuss a scenario for the formation of intermediate mass black holes in dense star clusters.In this scenario,intermediate mass black holes are formed as a result of dynamical interactions of hard binaries,containing a stellar mass black hole,with other stars and binaries.I will discuss the necessary conditions to initiate the process of intermediate mass black hole formation and the dependence of its rate of mass increase on the global cluster properties.
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