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A Possible Formation Scenario of the Gaia BH1: Inner Binary Merger in Triple Systems

文献类型：期刊论文

作者Li, Zhuowen3; Zhu, Chunhua3; Lu, Xizhen3; Lue, Guoliang2,3; Li, Lin3; Liu, Helei3; Guo, Sufen3; Yu, Jinlong1
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2024-11-01
卷号975期号:1页码:L8
ISSN号2041-8205
DOI10.3847/2041-8213/ad8653
产权排序2
英文摘要Based on astrometric measurements and spectral analysis from Gaia DR3, two quiescent black hole (BH) binaries, Gaia BH1 and BH2, have been identified. Their origins remain controversial, particularly for Gaia BH1. By considering a rapidly rotating (omega/omega crit = 0.8) and strongly magnetized (B 0 = 5000 G) merger product, we find that, at typical Galactic metallicity, the merger product can undergo efficient chemically homogeneous evolution. This results in the merger product having a significantly smaller radius during its evolution compared to that of a normally evolving massive star. Under the condition that the initial triple stability is satisfied, we use the Multiple Stellar Evolution code and the MESA code to identify an initial hierarchical triple that can evolve into Gaia BH1. It initially consists of three stars with masses of 9.03 M circle dot, 3.12 M circle dot, and 1 M circle dot, with inner and outer orbital periods of 2.21 days and 121.92 days, and inner and outer eccentricities of 0.41 and 0.45, respectively. This triple initially experiences triple evolution dynamics instability (TEDI) followed by Roche lobe overflow (RLOF). During RLOF, the inner orbit shrinks, and tidal effects gradually suppress the TEDI. Eventually, the inner binary undergoes a merger through contact (or collision). Finally, using models of rapidly rotating and strongly magnetic stars, along with standard core-collapse supernova (SN) or failed supernova (FSN) models, we find that a postmerger binary (PMB) consisting of an 12.11 M circle dot merger product and a 1 M circle dot companion star (originally an outer tertiary) can avoid RLOF. After an SN or FSN with a low ejected mass of similar to 0.22 M circle dot and a low kick velocity ( 46-33+25kms-1 or 9-8+16kms-1 ), the PMB can form Gaia BH1 in the Galactic disk.
WOS关键词STELLAR COLLISION PRODUCTS ; MASSIVE STAR EVOLUTION ; FOSSIL MAGNETIC-FIELDS ; BLACK-HOLE BINARIES ; ANGULAR-MOMENTUM LOSS ; LONG-TERM EVOLUTION ; WOLF-RAYET STARS ; POPULATION SYNTHESIS ; BLUE STRAGGLERS ; DIFFERENTIAL ROTATION
资助项目MOST divided by NSFC divided by National Natural Science Foundation of China-Xinjiang Joint Fund (NSFC-Xinjiang Joint Fund)https://doi.org/10.13039/100017053[U2031204] ; MOST divided by NSFC divided by National Natural Science Foundation of China-Xinjiang Joint Fund (NSFC-Xinjiang Joint Fund)https://doi.org/10.13039/100017053[12163005] ; MOST divided by NSFC divided by National Natural Science Foundation of China-Xinjiang Joint Fund (NSFC-Xinjiang Joint Fund)https://doi.org/10.13039/100017053[12373038] ; MOST divided by NSFC divided by National Natural Science Foundation of China-Xinjiang Joint Fund (NSFC-Xinjiang Joint Fund)https://doi.org/10.13039/100017053[12288102] ; National Natural Science Foundation of China[2022D01D85] ; National Natural Science Foundation of China[2022TSYCLJ0006] ; Natural Science Foundation of Xinjiang[CMS-CSST-2021-A10] ; China Manned Space Project
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001342110300001
出版者IOP Publishing Ltd
资助机构MOST divided by NSFC divided by National Natural Science Foundation of China-Xinjiang Joint Fund (NSFC-Xinjiang Joint Fund)https://doi.org/10.13039/100017053 ; National Natural Science Foundation of China ; Natural Science Foundation of Xinjiang ; China Manned Space Project
源URL[http://ir.xao.ac.cn/handle/45760611-7/7080]  
专题射电天文研究室_理论天体物理研究团组
通讯作者Li, Zhuowen; Zhu, Chunhua; Lue, Guoliang
作者单位1.Tarim Univ, Coll Mech & Elect Engn, Alar 843300, Peoples R China
2.Chinese Acad Sci, Xinjiang Observ, Urumqi 830011, Peoples R China
3.Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Peoples R China
推荐引用方式
GB/T 7714		 Li, Zhuowen,Zhu, Chunhua,Lu, Xizhen,et al. A Possible Formation Scenario of the Gaia BH1: Inner Binary Merger in Triple Systems[J]. ASTROPHYSICAL JOURNAL LETTERS,2024,975(1):L8.
APA Li, Zhuowen.,Zhu, Chunhua.,Lu, Xizhen.,Lue, Guoliang.,Li, Lin.,...&Yu, Jinlong.(2024).A Possible Formation Scenario of the Gaia BH1: Inner Binary Merger in Triple Systems.ASTROPHYSICAL JOURNAL LETTERS,975(1),L8.
MLA Li, Zhuowen,et al."A Possible Formation Scenario of the Gaia BH1: Inner Binary Merger in Triple Systems".ASTROPHYSICAL JOURNAL LETTERS 975.1(2024):L8.

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