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Mass Segregation as a New Indicator of Binary, IMBH, and Stellar-mass Black Hole Systems in Globular Clusters
Wu,Wenbo1,2; Zhao,Gang1,2
2021-02-01
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume908Issue:2
AbstractAbstract This study presents the mass segregation of 35 Galactic globular clusters (GCs) through the radial profile of the mean mass of main-sequence stars. Most of them are found to be mass segregated due to two-body relaxation effects. The GCs with a larger core to half-mass–radius ratio tend to be less mass segregated. Recent simulations show that energy sources can quench mass segregation in relaxed GCs. Combining mass segregation and core binary fractions (fc), we find a moderate anticorrelation between them when fc is below 0.15. Four GCs that have a small amount of mass segregation are selected as possible intermediate-mass black hole holders. However, none of them are strong candidates considering their half-mass relaxation times.
KeywordGlobular star clusters Binary stars Intermediate-mass black holes Stellar mass black holes Stellar kinematics Star clusters
DOI10.3847/1538-4357/abd6b8
Language英语
WOS IDIOP:0004-637X-908-2-abd6b8
PublisherThe American Astronomical Society
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/60650
Collection中国科学院国家天文台
Corresponding AuthorZhao,Gang
Affiliation1.CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China gzhao@nao.cas.cn
2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wu,Wenbo,Zhao,Gang. Mass Segregation as a New Indicator of Binary, IMBH, and Stellar-mass Black Hole Systems in Globular Clusters[J]. The Astrophysical Journal,2021,908(2).
APA Wu,Wenbo,&Zhao,Gang.(2021).Mass Segregation as a New Indicator of Binary, IMBH, and Stellar-mass Black Hole Systems in Globular Clusters.The Astrophysical Journal,908(2).
MLA Wu,Wenbo,et al."Mass Segregation as a New Indicator of Binary, IMBH, and Stellar-mass Black Hole Systems in Globular Clusters".The Astrophysical Journal 908.2(2021).
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