ITP OpenIR  > 理论物理所2015年知识产出
SUPERMASSIVE BLACK HOLES IN GALACTIC NUCLEI WITH TIDAL DISRUPTION OF STARS. II. AXISYMMETRIC NUCLEI
Zhong, SY; Berczik, P; Spurzem, R; Zhong, SY (reprint author), Chinese Acad Sci, Natl Astron Observ China, 20A Datun Rd, Beijing 100012, Peoples R China.
2015
发表期刊ASTROPHYSICAL JOURNAL
卷号811期号:1页码:22
文章类型Article
摘要The tidal disruption (TD) of stars by supermassive central black holes from dense rotating star clusters is modeled by high-accuracy direct N-body simulations. As in a previous paper on spherical star clusters, we study the time evolution of the stellar tidal disruption rate and the origin of tidally disrupted stars, which are now accorded to several classes of orbits that only occur in axisymmetric systems (short-axis tube and saucer orbits). Compared with that in spherical systems, we found a higher TD rate in axisymmetric systems. The enhancement can be explained by an enlarged loss cone in phase space that stems from the fact that the total angular momentum J is not conserved. As in the case of spherical systems, the distribution of the last apocenter distance of tidally accreted stars peaks at the classical critical radius. However, the angular distribution of the origin of the accreted stars reveals interesting features. Inside the influence radius of the supermassive black hole the angular distribution of disrupted stars has a conspicuous bimodal structure with a local minimum near the equatorial plane. Outside of the influence radius this dependence is weak. We show that the bimodal structure of orbital parameters can be explained by the presence of two families of regular orbits, namely short-axis tube and saucer orbits. Also, we present the consequences of our results for the loss cone in axisymmetric galactic nuclei.
关键词Galaxies: Kinematics And Dynamics Galaxies: Nuclei Methods: Numerical Quasars: Supermassive Black Holes Stars: Kinematics And Dynamics
学科领域Astronomy & Astrophysics
资助者Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Chinese Academy of Sciences Visiting Professorship [2009S1-5] ; Chinese Academy of Sciences through the Chinese Academy of Sciences Visiting Professorship [2009S1-5] ; Chinese Academy of Sciences through the "Qianren" special foreign experts program of China ; Chinese Academy of Sciences through the "Qianren" special foreign experts program of China ; Ministry of Finance of People's Republic of China [ZDY Z2008-2] ; Ministry of Finance of People's Republic of China [ZDY Z2008-2] ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Chinese Academy of Sciences Visiting Professorship [2009S1-5] ; Chinese Academy of Sciences through the Chinese Academy of Sciences Visiting Professorship [2009S1-5] ; Chinese Academy of Sciences through the "Qianren" special foreign experts program of China ; Chinese Academy of Sciences through the "Qianren" special foreign experts program of China ; Ministry of Finance of People's Republic of China [ZDY Z2008-2] ; Ministry of Finance of People's Republic of China [ZDY Z2008-2]
DOIhttp://dx.doi.org/10.1088/0004-637X/811/1/22
关键词[WOS]ROTATING STELLAR-SYSTEMS ; SPACE-TELESCOPE CENSUS ; FINAL-PARSEC PROBLEM ; EQUAL-MASS SYSTEM ; DYNAMICAL EVOLUTION ; SPIRAL GALAXIES ; GLOBULAR-CLUSTERS ; EFFICIENT MERGER ; ACCRETION ; COLLAPSE
收录类别SCI
语种英语
资助者Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Chinese Academy of Sciences Visiting Professorship [2009S1-5] ; Chinese Academy of Sciences through the Chinese Academy of Sciences Visiting Professorship [2009S1-5] ; Chinese Academy of Sciences through the "Qianren" special foreign experts program of China ; Chinese Academy of Sciences through the "Qianren" special foreign experts program of China ; Ministry of Finance of People's Republic of China [ZDY Z2008-2] ; Ministry of Finance of People's Republic of China [ZDY Z2008-2] ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Chinese Academy of Sciences Visiting Professorship [2009S1-5] ; Chinese Academy of Sciences through the Chinese Academy of Sciences Visiting Professorship [2009S1-5] ; Chinese Academy of Sciences through the "Qianren" special foreign experts program of China ; Chinese Academy of Sciences through the "Qianren" special foreign experts program of China ; Ministry of Finance of People's Republic of China [ZDY Z2008-2] ; Ministry of Finance of People's Republic of China [ZDY Z2008-2]
WOS类目Astronomy & Astrophysics
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/20857
专题理论物理所2015年知识产出
通讯作者Zhong, SY (reprint author), Chinese Acad Sci, Natl Astron Observ China, 20A Datun Rd, Beijing 100012, Peoples R China.
推荐引用方式
GB/T 7714
Zhong, SY,Berczik, P,Spurzem, R,et al. SUPERMASSIVE BLACK HOLES IN GALACTIC NUCLEI WITH TIDAL DISRUPTION OF STARS. II. AXISYMMETRIC NUCLEI[J]. ASTROPHYSICAL JOURNAL,2015,811(1):22.
APA Zhong, SY,Berczik, P,Spurzem, R,&Zhong, SY .(2015).SUPERMASSIVE BLACK HOLES IN GALACTIC NUCLEI WITH TIDAL DISRUPTION OF STARS. II. AXISYMMETRIC NUCLEI.ASTROPHYSICAL JOURNAL,811(1),22.
MLA Zhong, SY,et al."SUPERMASSIVE BLACK HOLES IN GALACTIC NUCLEI WITH TIDAL DISRUPTION OF STARS. II. AXISYMMETRIC NUCLEI".ASTROPHYSICAL JOURNAL 811.1(2015):22.
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