| Stellar Cycle and Evolution of Polar Spots in an M plus WD Binary | |
Zhao, Xinlin1,2; Wang, Song1,3; Li, Xue1,2; Xiang Y(项越)4,5 ; Xu FK(徐甫坤)4,5; Gu SH(顾盛宏)2,4,5; Du, Bing1; Liu, Jifeng1,2,3,6
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2024-03-01 | |
| 卷号 | 963期号:2 |
| DOI | 10.3847/1538-4357/ad1e64 |
| 产权排序 | 第4完成单位 |
| 收录类别 | SCI |
| 摘要 | Stellar activity cycles reveal continuous relaxation and induction of magnetic fields. The activity cycle is typically traced through the observation of cyclic variations in total brightness or Ca H&K emission flux of stars, as well as cyclic variations in the orbital periods of binary systems. In this work, we report the identification of a semidetached binary system (TIC 16320250) consisting of a white dwarf (0.67 M circle dot) and an active M dwarf (0.56 M circle dot). The long-term multiband optical light curves spanning twenty years revealed three repeated patterns, suggestive of a possible activity cycle of about 10 years of the M dwarf. Light-curve fitting indicates the repeated variation is caused by the evolution, particularly the motion, of polar spots. The significant Ca H&K, H alpha, ultra-violet, and X-ray emissions imply that the M dwarf is one of the most magnetically active stars. We propose that in the era of large time-domain photometric sky surveys (e.g., ASAS-SN, Zwicky Transient Facility, LSST, Sitian), long-term light-curve modeling can be a valuable tool for tracing and revealing stellar activity cycle, especially for stars in binary systems. |
| 资助项目 | Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope); National Development and Reform Commission; Chinese Academy of Sciences - TAP member institutes; Gaia Multilateral Agreement (MLA); Astropy package for the detection and photometry of astronomical sources; National Science Foundation of China (NSFC)[11988101/11933004/11833002/12090042/12103047/12273057]; National Key Research and Development Program of China (NKRDPC)[2019YFA0405504]; National Key Research and Development Program of China (NKRDPC)[2019YFA0405000]; Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000]; China Manned Space Project[CMS-CSST-2021-A08]; Yunnan Fundamental Research Projects[202201AT070186]; Yunnan Fundamental Research Projects[202305AS350009]; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001]; Youth Innovation Promotion Association of the CAS[2019057] |
| 项目资助者 | Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope) ; National Development and Reform Commission ; Chinese Academy of Sciences - TAP member institutes ; Gaia Multilateral Agreement (MLA) ; Astropy package for the detection and photometry of astronomical sources ; National Science Foundation of China (NSFC)[11988101/11933004/11833002/12090042/12103047/12273057] ; National Key Research and Development Program of China (NKRDPC)[2019YFA0405504, 2019YFA0405000] ; Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; China Manned Space Project[CMS-CSST-2021-A08] ; Yunnan Fundamental Research Projects[202201AT070186, 202305AS350009] ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001] ; Youth Innovation Promotion Association of the CAS[2019057] |
| 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 | 0004-637X |
| URL | 查看原文 |
| WOS记录号 | WOS:001181069000001 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | MAGNETIC-FLUX TUBES ; X-RAY ACTIVITY ; SURFACE-STRUCTURE ; STARS ; PERIOD ; LONG ; PHYSICS ; DYNAMICS ; DWARFS ; IMAGES |
| 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/114a53/26553 |
| 专题 | 系外行星研究组 中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
[email protected]; 2.School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China; 3.Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University, Beijing 102206, People's Republic of China; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 6.New Cornerstone Science Laboratory, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Zhao, Xinlin,Wang, Song,Li, Xue,et al. Stellar Cycle and Evolution of Polar Spots in an M plus WD Binary[J]. ASTROPHYSICAL JOURNAL,2024,963(2). |
| APA | Zhao, Xinlin.,Wang, Song.,Li, Xue.,项越.,徐甫坤.,...&Liu, Jifeng.(2024).Stellar Cycle and Evolution of Polar Spots in an M plus WD Binary.ASTROPHYSICAL JOURNAL,963(2). |
| MLA | Zhao, Xinlin,et al."Stellar Cycle and Evolution of Polar Spots in an M plus WD Binary".ASTROPHYSICAL JOURNAL 963.2(2024). |
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| Stellar Cycle and Ev（3786KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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