A Method to Search for Black Hole Candidates with Giant Companions by LAMOST

doi:10.3847/2041-8213/ab04f0

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	A Method to Search for Black Hole Candidates with Giant Companions by LAMOST
	Gu,Wei-Min 1; Mu,Hui-Jun 1; Fu,Jin-Bo 1; Zheng,Ling-Lin 1; Yi,Tuan 1; Bai,Zhong-Rui 3; Wang,Song 3; Zhang,Hao-Tong 3; Lei,Ya-Juan 3; Bai,Yu 3
刊名	The Astrophysical Journal Letters
	2019-02-19
卷号	872 期号:2
关键词	binaries: general stars: black holes stars: kinematics and dynamics
ISSN号	2041-8205
DOI	10.3847/2041-8213/ab04f0
英文摘要	Abstract We propose a method to search for stellar-mass black hole (BH) candidates with giant companions from spectroscopic observations. Based on the stellar spectra of Large sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST) Data Release 6, we obtain a sample of seven giants in binaries with large radial velocity variation ΔVR?>?80 km s?1. With the effective temperature, surface gravity, and metallicity provided by LAMOST, and the parallax given by Gaia, we can estimate the mass and radius of the giant, and therefore evaluate the possible mass of the optically invisible star in the binary. We show that the sources in our sample are potential BH candidates, and are worthy of dynamical measurement by further spectroscopic observations. Our method may be particularly valid for the selection of BH candidates in binaries with unknown orbital periods.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:2041-8205-872-2-AB04F0
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/25116]
专题	中国科学院国家天文台
作者单位	1.Department of Astronomy, Xiamen University, Xiamen, Fujian 361005, People’s Republic of China; guwm@xmu.edu.cn 2.College of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 3.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China
推荐引用方式 GB/T 7714	Gu,Wei-Min,Mu,Hui-Jun,Fu,Jin-Bo,et al. A Method to Search for Black Hole Candidates with Giant Companions by LAMOST[J]. The Astrophysical Journal Letters,2019,872(2).
APA	Gu,Wei-Min.,Mu,Hui-Jun.,Fu,Jin-Bo.,Zheng,Ling-Lin.,Yi,Tuan.,...&Liu,Jifeng.(2019).A Method to Search for Black Hole Candidates with Giant Companions by LAMOST.The Astrophysical Journal Letters,872(2).
MLA	Gu,Wei-Min,et al."A Method to Search for Black Hole Candidates with Giant Companions by LAMOST".The Astrophysical Journal Letters 872.2(2019).