| Detection of the lowest mass ratio contact binary in the universe: TYC 3801-1529-1 | |
Li, Kai1; Gao, Xiang1; Guo, Di-Fu1; Gao, Dong-Yang1; Chen, Xu1; Wang, Li-Heng1; Xin YX(辛玉新)2 ; Han, Yu-Xin1; Kim, Chun-Hwey3; Jeong, Min-Ji3
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| 发表期刊 | ASTRONOMY & ASTROPHYSICS
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| 2024-12-04 | |
| 卷号 | 692 |
| DOI | 10.1051/0004-6361/202451947 |
| 产权排序 | 第2完成单位 |
| 收录类别 | SCI ; EI |
| 关键词 | binaries: close binaries: eclipsing stars: evolution stars: individual: TYC 3801-1529-1 |
| 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. |
| 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 |
| 项目资助者 | 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 |
| 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 | EDP SCIENCES S A |
| 出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE |
| ISSN | 0004-6361 |
| URL | 查看原文 |
| WOS记录号 | WOS:001370090500018 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | PERIOD CHANGES ; LIGHT CURVES ; STAR LIGHT ; TELESCOPE ; PERTURBATIONS ; STATISTICS ; STABILITY ; EVOLUTION ; ACCURACY ; CATALOG |
| EI入藏号 | 20245017506637 |
| EI主题词 | Stars |
| EI分类号 | 1302 - 1302.1.2 |
| 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/114a53/27837 |
| 专题 | 南方基地 |
| 作者单位 | 1.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; 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; 3.Department of Astronomy and Space Science, Chungbuk National University, Cheongju 361-763, Korea |
| 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). |
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