Fundamental Parameters of a Binary System Consisting of a Red Dwarf and a Compact Star

doi:10.3847/1538-3881/ad7d84

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	Fundamental Parameters of a Binary System Consisting of a Red Dwarf and a Compact Star
	Ding X(丁旭)1,2,3 ; Ji KF(季凯帆)1,2,3,4 ; Song, ZhiMing 5,6; Liu NP(刘念平)1,2,3 ; Xiong JP(熊建萍)1,2,3 ; Cheng QY(程其原)1,2,3,4 ; Wang CJ(王传军)1,2,3,4 ; Wang JL(王锦良)1,2,3,4 ; Wang DQ(王德清)1,2,3 ; He SS(和寿圣)1,2,3
发表期刊	ASTRONOMICAL JOURNAL
	2024-11-01
卷号	168 期号:5
DOI	10.3847/1538-3881/ad7d84
产权排序	第1完成单位
收录类别	SCI
摘要	TIC 157365951 has been classified as a delta Scuti type by the International Variable Star Index. Through the spectra from Large Sky Area Multi-Object Fiber Spectroscopic Telescope and its light curve, we further discovered that it is a binary system. This binary system comprises a red-dwarf star and a compact star. Through the spectral energy distribution fitting, we determined the mass of the red dwarf star as M 1 = 0.31 +/- 0.01M circle dot and its radius as R 1 = 0.414 +/- 0.004R circle dot. By fitting the double-peaked H alpha emission, we derived the mass ratio of q = 1.76 +/- 0.04, indicating a compact star mass of M 2 = 0.54 +/- 0.01M circle dot. Using Phoebe to model the light curve and radial velocity curve for the detached binary system, we obtained a red dwarf star mass of M 1 = 0.29 +/- 0.02M circle dot, a radius of R 1 = 0.39 +/- 0.04R circle dot, and a Roche-lobe filling factor of f = 0.995 +/- 0.129, which is close to the f = 1 expected for a semidetached system. The Phoebe model gives a compact star mass M 2 = 0.53 +/- 0.05M circle dot. Constraining the system to be semidetached gives M 1 = 0.34 +/- 0.02M circle dot, R 1 = 0.41 +/- 0.01R circle dot, and M 2 = 0.62 +/- 0.03M circle dot. The consistency of the models is encouraging. The value of the Roche-lobe filling factor suggests that there might be ongoing mass transfer. The compact star mass is as massive as a typical white dwarf.
资助项目	Chinese Natural Science Foundation[12103088]; Chinese Natural Science Foundation[12433009]; National Key R&D Program of China[2022YFF0711500]; National Key R&D Program of China[2023YFA1608300]; Yunnan Key Laboratory of Solar Physics and Space Science[202205AG070009]; Yunnan Provincial Foundation[202101AT070020]; Yunnan Provincial Key Laboratory of Forensic Science[YJXK005]; Yunnan Basic Research Program[202201AU070116]; Yunnan Key Laboratory of Service Computing, Kunming, China; China Manned Space Project[CMS-CSST-2021-A10]; China Manned Space Project[CMS-CSST-2021-A12]; China Manned Space Project[CMS-CSST-2021-B10]
项目资助者	Chinese Natural Science Foundation[12103088, 12433009] ; National Key R&D Program of China[2022YFF0711500, 2023YFA1608300] ; Yunnan Key Laboratory of Solar Physics and Space Science[202205AG070009] ; Yunnan Provincial Foundation[202101AT070020] ; Yunnan Provincial Key Laboratory of Forensic Science[YJXK005] ; Yunnan Basic Research Program[202201AU070116] ; Yunnan Key Laboratory of Service Computing, Kunming, China ; China Manned Space Project[CMS-CSST-2021-A10, CMS-CSST-2021-A12, CMS-CSST-2021-B10]
语种	英语
学科领域	天文学 ; 恒星与银河系
文章类型	Article
出版者	IOP Publishing Ltd
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN	0004-6256
URL	查看原文
WOS记录号	WOS:001337548000001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	BLACK-HOLE ; PHYSICS ; SEARCH ; COMPANIONS ; CANDIDATE ; III.
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/114a53/27655
专题	南方基地大样本恒星演化研究组双星与变星研究组中国科学院天体结构与演化重点实验室天文技术实验室
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, Kunming 650216, People's Republic of China; [email protected], [email protected], [email protected]; 2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, People's Republic of China; 3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People's Republic of China; 4.University of the Chinese Academy of Sciences, Yuquan Road 19#, Shijingshan Block, Beijing 100049, People's Republic of China; 5.School of Information, Yunnan University of Finance and Economics, Kunming, People's Republic of China; 6.Yunnan Key Laboratory of Service Computing, Kunming, People's Republic of China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Ding X,Ji KF,Song, ZhiMing,et al. Fundamental Parameters of a Binary System Consisting of a Red Dwarf and a Compact Star[J]. ASTRONOMICAL JOURNAL,2024,168(5).
APA	丁旭.,季凯帆.,Song, ZhiMing.,刘念平.,熊建萍.,...&和寿圣.(2024).Fundamental Parameters of a Binary System Consisting of a Red Dwarf and a Compact Star.ASTRONOMICAL JOURNAL,168(5).
MLA	丁旭,et al."Fundamental Parameters of a Binary System Consisting of a Red Dwarf and a Compact Star".ASTRONOMICAL JOURNAL 168.5(2024).

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