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

文献类型：期刊论文

作者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, Jiao5; Liu, Chao2,5,6; Li JD(李江丹)1; Luo JX(罗竞霄)1,2; Lyu, Xin2,7,8; Han ZW(韩占文)1,3,4
刊名ASTRONOMICAL JOURNAL
出版日期2024-04-01
卷号167期号:4
ISSN号0004-6256
DOI10.3847/1538-3881/ad2760
产权排序第1完成单位
文献子类Article
英文摘要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.
学科主题天文学
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词BOLOMETRIC CORRECTIONS ; ORBITAL PERIOD ; STABILITY ; I.
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
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP Publishing Ltd
WOS记录号WOS:001180425100001
资助机构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
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/26444]  
专题云南天文台_大样本恒星演化研究组
云南天文台_丽江天文观测站（南方基地）
云南天文台_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; cxf@ynao.ac.cn;
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
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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