The First Photometric Analysis of Two Low-mass-ratio Contact Binary Systems in TESS Survey

doi:10.3847/1538-3881/ad2760

YNAO OpenIR > 大样本恒星演化研究组

	The First Photometric Analysis of Two Low-mass-ratio Contact Binary Systems in TESS Survey
	Cheng QY(程其原)1,2 ; Xiong JP(熊建萍)1,3,4 ; Ding X(丁旭)1 ; Ji KF(季凯帆)1 ; Li, Jiao 5; Liu, Chao 2,5,6; Li JD(李江丹)1 ; Luo JX(罗竞霄)1,2 ; Lyu, Xin 2,7,8; Han ZW(韩占文)1,3,4 ; Chen XF(陈雪飞)1,3,4
发表期刊	ASTRONOMICAL JOURNAL
	2024-04-01
卷号	167 期号:4
DOI	10.3847/1538-3881/ad2760
产权排序	第1完成单位
收录类别	SCI
摘要	Low-mass-ratio (q) contact binary systems are progenitors of stellar mergers such as blue stragglers or fast-rotating FK Com stars. In this study, we present the first light curve analysis of two newly identified low mass-ratio contact binary systems, TIC 55007847 and TIC 63597006, that are identified from TESS. Both stars are classified as A-subtype contact binaries. We obtained the precise orbit periods for the two objects by using the O - C method, i.e., P = 0.6117108 day for TIC 55007847 and P = 0.7008995 day for TIC 63597006, and found an obvious periodic signal in the O - C curve of TIC 63597006. We suggest that the periodic signal comes from a third body. We further use the Markov chain Monte Carlo method with PHOEBE to derive the photometric solutions for the two binaries. The photometric solution for this object shows that the contribution of the third body is about 6%. Our analysis revealed that TIC 55007847 has an extremely low mass ratio of q = 0.08. By calculating the ratio of spin angular momentum to the orbital angular momentum J s/J o, we found that TIC 55007847 is very close to the instability threshold with J s/J o = 0.31, indicating that it may merge into a single, fast-rotating star in the future. For TIC 63597006, q = 0.14 and J s/J o = 0.15. This object is in a relatively stable evolutionary status at present.
资助项目	MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12125303]; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12288102]; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12090040/3]; National Natural Science Foundation of China[2021YFA1600403]; National Key R&D Program of China[202201BCO70003]; Yunnan Fundamental Research Projects[202302AN360001]; International Centre of Supernovae, Yunnan Key Laboratory[202305AB350003]; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[12103088]; Chinese Natural Science Foundation
项目资助者	MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12125303, 12288102, 12090040/3] ; National Natural Science Foundation of China[2021YFA1600403] ; National Key R&D Program of China[202201BCO70003] ; Yunnan Fundamental Research Projects[202302AN360001] ; International Centre of Supernovae, Yunnan Key Laboratory[202305AB350003] ; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[12103088] ; Chinese Natural Science Foundation
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	0004-6256
URL	查看原文
WOS记录号	WOS:001180425100001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	BOLOMETRIC CORRECTIONS ; ORBITAL PERIOD ; STABILITY ; I.
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/114a53/26444
专题	大样本恒星演化研究组南方基地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, 396 YangFangWang, Guandu District, Kunming, 650216, People's Republic of China; [email protected]; 2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China; 3.Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, People's Republic of China; 4.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People's Republic of China; 5.Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, CAS, Beijing 100101, People's Republic of China; 6.Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University, Beijing, 102206, People's Republic of China; 7.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China; 8.Key Laboratory of Radio Astronomy and Technolgoy, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing, 100101, 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	Cheng QY,Xiong JP,Ding X,et al. The First Photometric Analysis of Two Low-mass-ratio Contact Binary Systems in TESS Survey[J]. ASTRONOMICAL JOURNAL,2024,167(4).
APA	程其原.,熊建萍.,丁旭.,季凯帆.,Li, Jiao.,...&陈雪飞.(2024).The First Photometric Analysis of Two Low-mass-ratio Contact Binary Systems in TESS Survey.ASTRONOMICAL JOURNAL,167(4).
MLA	程其原,et al."The First Photometric Analysis of Two Low-mass-ratio Contact Binary Systems in TESS Survey".ASTRONOMICAL JOURNAL 167.4(2024).

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