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Stellar Cycle and Evolution of Polar Spots in an M plus WD Binary

文献类型：期刊论文

作者Zhao, Xinlin5,6; Wang, Song1,5; Li, Xue5,6; Xiang Y(项越)2,3; Xu FK(徐甫坤)2,3; Gu SH(顾盛宏)2,3,6; Du, Bing5; Liu, Jifeng1,4,5,6
刊名ASTROPHYSICAL JOURNAL
出版日期2024-03-01
卷号963期号:2
ISSN号0004-637X
DOI10.3847/1538-4357/ad1e64
产权排序第4完成单位
文献子类Article
英文摘要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.
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MAGNETIC-FLUX TUBES ; X-RAY ACTIVITY ; SURFACE-STRUCTURE ; STARS ; PERIOD ; LONG ; PHYSICS ; DYNAMICS ; DWARFS ; IMAGES
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]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP Publishing Ltd
WOS记录号WOS:001181069000001
资助机构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]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/26553]  
专题云南天文台_系外行星研究组
云南天文台_中国科学院天体结构与演化重点实验室
作者单位1.Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University, Beijing 102206, People's Republic of China;
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China;
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China;
4.New Cornerstone Science Laboratory, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China
5.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China songw@bao.ac.cn;
6.School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing 100049, 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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