Revised physical parameters and study on magnetic activities for the eclipsing binary USNO-B1.0 1387-0467554

doi:10.1093/mnras/stad1051

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	Revised physical parameters and study on magnetic activities for the eclipsing binary USNO-B1.0 1387-0467554
	Wang JH(王建华)2,3,4; Gu SH(顾盛宏)2,3,4; Wang XB(王晓彬)2,3,4; Yeung, Bill 1; Ng, Eric 1; Yu, Kamfung 1; Sun LL(孙磊磊)2,4; Xiang Y(项越)2,4; Cao DT(曹东涛)2,4; Bai JM(白金明)2,4
刊名	Monthly Notices of the Royal Astronomical Society
	2023-06-01
卷号	521 期号:4 页码:6295-6304
ISSN号	0035-8711
DOI	10.1093/mnras/stad1051
产权排序	第1完成单位
文献子类	Journal article (JA)
英文摘要	We present optimized physical parameters of the active eclipsing binary system USNO-B1.0 1387-0467554 discovered recently in Yunnan–Hong Kong wide-field photometric (YNHK) survey, based on the analysis of its two colour light curves and low resolution spectra obtained at Yunnan Observatories, China. Its spot distributions are derived by means of the Wilson–Devinney code, using photometric data of the YNHK survey from 2016 to 2021. There exist active longitude belts for the spot activities on the primary star, for which the effect of tidal force seems dominant comparing with the one of common magnetic field of the binary system. We have investigated its chromospheric activities through the indicators including Hα, Hβ, CaII H&K, and HeI D3 lines covered by the low resolution spectroscopic observations. There are obvious spatial correlations between the magnetic activities in its photosphere and chromosphere. The EHα/EHβ values suggest that both plages and prominences led to the emissions seen in the Balmer lines at most phases. A prominence structure appeared around the phase of 0.8 on 2018 October 25 and evolved in November and December, 2018. The spectra demonstrate that there were frequent flare events in the system. Moreover, the decay part of a white-light flare event was hunted by the YNHK survey on 2021 October 26. © 2023 The Author(s)
学科主题	天文学
URL标识	查看原文
语种	英语
出版者	Oxford University Press
资助机构	National Natural Science Foundation of China[10373023, 10773027, 11603068, 11903074, U1531121]
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/26048]
专题	云南天文台_丽江天文观测站（南方基地）
作者单位	1.Hong Kong Astronomical Society, Hong Kong, 999077, Hong Kong 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, 650216, China; 3.University of Chinese Academy of Sciences, Beijing, 100049, China; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, China;
推荐引用方式 GB/T 7714	Wang JH,Gu SH,Wang XB,et al. Revised physical parameters and study on magnetic activities for the eclipsing binary USNO-B1.0 1387-0467554[J]. Monthly Notices of the Royal Astronomical Society,2023,521(4):6295-6304.
APA	王建华.,顾盛宏.,王晓彬.,Yeung, Bill.,Ng, Eric.,...&罗南平.(2023).Revised physical parameters and study on magnetic activities for the eclipsing binary USNO-B1.0 1387-0467554.Monthly Notices of the Royal Astronomical Society,521(4),6295-6304.
MLA	王建华,et al."Revised physical parameters and study on magnetic activities for the eclipsing binary USNO-B1.0 1387-0467554".Monthly Notices of the Royal Astronomical Society 521.4(2023):6295-6304.