Mass Ratio Distribution of Hierarchical Triple Systems from the LAMOST-MRS Survey

doi:10.3847/1538-4357/acf8c4

YNAO OpenIR > 大样本恒星演化研究组

	Mass Ratio Distribution of Hierarchical Triple Systems from the LAMOST-MRS Survey
	He, Tongyu 1,2,3,4; Li JD(李江丹)5 ; Chen XF(陈雪飞)5 ; Yang, Rong-jia 1,2,3,4; Xiao, Lin 1,2,3,4; Han ZW(韩占文)1,5
发表期刊	ASTROPHYSICAL JOURNAL
	2023-11-01
卷号	958 期号:1
DOI	10.3847/1538-4357/acf8c4
产权排序	第5完成单位
收录类别	SCI
摘要	Hierarchical triple-star systems consists of three components organized into an inner binary (M 1, M 2) and a more distant outer tertiary (M 3) star. The LAMOST Medium-Resolution Spectroscopic Survey has offered a great sample for the study of triple-system populations. We used the peak amplitude ratio method to obtain the mass ratio (q in, q out) of a triple system from its normalized spectrum. By calculating the cross-correlation function, we determined the correlation between the mass ratio q out (M 3/(M 1 + M 2)) and the amplitude ratio (A 3/(A 1 + A 2)). We derived a q in of 0.5-1.0 and a q out between 0.2 and 0.8. By fitting a power-law function of the corrected q in distribution, gamma in is estimated to be -0.654 +/- 2.915, 4.304 +/- 1.125, and 11.371 +/- 1.309 for A-, F-, and G-type stars. The derived gamma in values increase as the mass decreases, indicating that less massive stars are more likely to have companion stars with similar masses. By fitting a power-law function of the corrected q out distribution, gamma out is estimated to be -2.016 +/- 0.172, -1.962 +/- 0.853, and -1.238 +/- 0.141 for G-, F-, and A-type stars, respectively. The gamma out values show a trend of growth toward lower primary star masses.
资助项目	National Natural Science Foundation of China[12288102]; National Natural Science Foundation of China[12090040/3]; National Key R&D Program of China[2021YFA1600400/1]; International Center of Supernova, Yunnan Key Laboratory[202201BC070003]; National Development and Reform Commission
项目资助者	National Natural Science Foundation of China[12288102, 12090040/3] ; National Key R&D Program of China[2021YFA1600400/1] ; International Center of Supernova, Yunnan Key Laboratory[202201BC070003] ; National Development and Reform Commission
语种	英语
学科领域	天文学
文章类型	Article
出版者	IOP Publishing Ltd
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN	0004-637X
URL	查看原文
WOS记录号	WOS:001096020300001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	ROTATIONAL VELOCITIES ; STELLAR ; GAIA ; BINARIES ; STARS ; MULTIPLICITY ; CANDIDATES ; PARAMETERS ; EVOLUTION ; APOGEE
引用统计
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/26449
专题	大样本恒星演化研究组
作者单位	1.College of Physics Science and Technology, Hebei University, Baoding 071002, People's Republic of China; [email protected]; 2.Department of Physics, College of Physical Sciences and Technology, Hebei University, Baoding, People's Republic of China; 3.Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province, Hebei University, Baoding, People's Republic of China; 4.Research Center for Computational Physics of Hebei Province, Baoding, 071002, People's Republic of China; 5.Yunnan Observatories, Chinese Academy of Sciences (CAS), 396 Yangfangwang, Guandu District, Kunming 650216, People's Republic of China
推荐引用方式 GB/T 7714	He, Tongyu,Li JD,Chen XF,et al. Mass Ratio Distribution of Hierarchical Triple Systems from the LAMOST-MRS Survey[J]. ASTROPHYSICAL JOURNAL,2023,958(1).
APA	He, Tongyu,李江丹,陈雪飞,Yang, Rong-jia,Xiao, Lin,&韩占文.(2023).Mass Ratio Distribution of Hierarchical Triple Systems from the LAMOST-MRS Survey.ASTROPHYSICAL JOURNAL,958(1).
MLA	He, Tongyu,et al."Mass Ratio Distribution of Hierarchical Triple Systems from the LAMOST-MRS Survey".ASTROPHYSICAL JOURNAL 958.1(2023).

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Mass Ratio Distribut（2119KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文