中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 云南天文台
  3. 中国科学院云南天文台
  4. 丽江天文观测站（南方基地）
Detection of the lowest mass ratio contact binary in the universe: TYC 3801-1529-1

文献类型：期刊论文

作者Li, Kai3; Gao, Xiang3; Guo, Di-Fu3; Gao, Dong-Yang3; Chen, Xu3; Wang, Li-Heng3; Xin YX(辛玉新)1; Han, Yu-Xin3; Kim, Chun-Hwey2; Jeong, Min-Ji2
刊名ASTRONOMY & ASTROPHYSICS
出版日期2024-12-04
卷号692
关键词binaries: close binaries: eclipsing stars: evolution stars: individual: TYC 3801-1529-1
ISSN号0004-6361
DOI10.1051/0004-6361/202451947
产权排序第2完成单位
文献子类Article
英文摘要This paper presents the first analysis of the contact binary TYC 3801-1529-1. We observed four sets of multiple bands complete light curves and one set of radial velocity curve of the primary component. Based on a simultaneous investigation of our observed and TESS light curves and the radial velocity curve, we found that TYC 3801-1529-1 is an extremely low-mass-ratio, medium contact binary with q = 0.0356, with the contribution of the third light at a level of about 10%. Its mass ratio is lower than V1187 Her, making TYC 3801-1529-1 the lowest mass-ratio contact binary ever found in the universe. The light curves observed in 2022 are asymmetric, which is aptly explained by a hot spot on the primary component. A 16-year eclipse timings analysis indicates a secular increase orbital period with a rate of dp/dt = 7.96(+/- 0.35)x10(-7) d yr(-1). We studied the stability of this target and identified that not only the value of J(spin)/J(orb), but also the mass ratio surpass the unstable boundary. Hence, TYC 3801-1529-1 presents a challenge to theoretical research and ought to be considered a progenitor of a contact binary merger.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
WOS关键词PERIOD CHANGES ; LIGHT CURVES ; STAR LIGHT ; TELESCOPE ; PERTURBATIONS ; STATISTICS ; STABILITY ; EVOLUTION ; ACCURACY ; CATALOG
资助项目National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809[12273018]; National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809[U1931103]; National Natural Science Foundation of China (NSFC); NSFC; Chinese Academy of Sciences (CAS); Qilu Young Researcher Project of Shandong University; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences; Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope LAMOST); National Development and Reform Commission; Chinese Academy of Sciences; NASA Science Mission Directorate
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001370090500018
出版者EDP SCIENCES S A
资助机构National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809[12273018, U1931103] ; National Natural Science Foundation of China (NSFC) ; NSFC ; Chinese Academy of Sciences (CAS) ; Qilu Young Researcher Project of Shandong University ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope LAMOST) ; National Development and Reform Commission ; Chinese Academy of Sciences ; NASA Science Mission Directorate
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27837]  
专题云南天文台_丽江天文观测站（南方基地）
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China;
2.Department of Astronomy and Space Science, Chungbuk National University, Cheongju 361-763, Korea
3.Shandong Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Technology, Institute of Space Sciences, Shandong University, Weihai, Shandong 264209, China;
推荐引用方式
GB/T 7714		 Li, Kai,Gao, Xiang,Guo, Di-Fu,et al. Detection of the lowest mass ratio contact binary in the universe: TYC 3801-1529-1[J]. ASTRONOMY & ASTROPHYSICS,2024,692.
APA Li, Kai.,Gao, Xiang.,Guo, Di-Fu.,Gao, Dong-Yang.,Chen, Xu.,...&Jeong, Min-Ji.(2024).Detection of the lowest mass ratio contact binary in the universe: TYC 3801-1529-1.ASTRONOMY & ASTROPHYSICS,692.
MLA Li, Kai,et al."Detection of the lowest mass ratio contact binary in the universe: TYC 3801-1529-1".ASTRONOMY & ASTROPHYSICS 692(2024).

入库方式： OAI收割

来源：云南天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。