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KIC 5359678: a detached eclipsing binary with starspots

文献类型：期刊论文

作者Wang, Jiaxin5; Fu, Jianning5; Niu, Hubiao4,5; Pan, Yang5; Li, Chunqian2,3; Zong, Weikai5; Hou, Yonghui1,2
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2021-07-01
卷号504期号:3页码:4302-4311
关键词binaries: eclipsing stars: rotation starspots
ISSN号0035-8711
DOI10.1093/mnras/stab1219
通讯作者Fu, Jianning(jnfu@bnu.edu.cn)
英文摘要We study the detached eclipsing binary, KIC 5359678, with starspot modulation using the high-quality Kepler photometry and LAMOST spectroscopy. The PHOEBE model, optimal for this binary, reveals that this system is a circular detached binary, composed of two F-type main-sequence stars. The masses and radii of the primary and the secondary are M-1 = 1.31 +/- 0.05 M-circle dot, R-1 = 1.52 +/- 0.04 R-circle dot, M-2 = 1.12 +/- 0.04 M-circle dot, and R-2 = 1.05 +/- 0.06 R-circle dot, respectively. The age of this binary is estimated to be about 2 Gyr, a value much longer than the synchronization time-scale of 17.8 Myr. The residuals of light curves show quasi-sinusoidal signals, which could be induced by starspots. We apply autocorrelation function analysis on the out-of-eclipse residuals and find that the spot with rotational period close to the orbital period, while, the decay time-scale of starspots is longer than that on the single stars with the same temperature, period range, and rms scatter. A two-starspot model is adopted to fit the signals with two-dip pattern, whose result shows that the longitude decreases with time.
WOS关键词DIFFERENTIAL ROTATION ; TIDAL SYNCHRONIZATION ; LAMOST OBSERVATIONS ; LIGHT CURVES ; II. ; I. ; PHYSICS ; EVOLUTION ; DATABASE ; CATALOG
资助项目National Natural Science Foundation of China (NSFC)[11833002] ; National Natural Science Foundation of China (NSFC)[12090040] ; National Natural Science Foundation of China (NSFC)[12090042] ; National Natural Science Foundation of China (NSFC)[11903005] ; National Development and Reform Commission ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Key Research Program of Frontier Sciences, CAS[QYZDY-SSWSLH007] ; Fundamental Research Funds for the Central Universities
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000656139300079
出版者OXFORD UNIV PRESS
资助机构National Natural Science Foundation of China (NSFC) ; National Development and Reform Commission ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Key Research Program of Frontier Sciences, CAS ; Fundamental Research Funds for the Central Universities
源URL[http://ir.xao.ac.cn/handle/45760611-7/4547]  
专题新疆天文台_光学天文与技术应用研究室
通讯作者Fu, Jianning
作者单位1.Chinese Acad Sci, Nanjing Inst Astron Opt & Technol, Natl Astron Observ, Nanjing 210042, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 10049, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
4.Chinese Acad Sci, Xinjiang Astron Observ, 150,Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
5.Beijing Normal Univ, Dept Astron, 19 XinJieKouWai St, Beijing 100875, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Jiaxin,Fu, Jianning,Niu, Hubiao,et al. KIC 5359678: a detached eclipsing binary with starspots[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,504(3):4302-4311.
APA Wang, Jiaxin.,Fu, Jianning.,Niu, Hubiao.,Pan, Yang.,Li, Chunqian.,...&Hou, Yonghui.(2021).KIC 5359678: a detached eclipsing binary with starspots.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,504(3),4302-4311.
MLA Wang, Jiaxin,et al."KIC 5359678: a detached eclipsing binary with starspots".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 504.3(2021):4302-4311.

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