Spot Distribution and Evolution on Two New Active Binaries Discovered in the YNHK Survey
文献类型：期刊论文
| 作者 | Wang JH(王建华)1,2,3 ; Gu SH(顾盛宏)1,2,3; Wang XB(王晓彬)1,2,3; Yeung, Bill4; Ng, Eric4; Yu, Kamfung4; Sun LL(孙磊磊)1,3,5; Xiang Y(项越)1,3,5; Cao DT(曹东涛)1,3,5; Lun BL(伦宝利)1,3
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| 刊名 | ASTRONOMICAL JOURNAL
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| 出版日期 | 2025-06-02 |
| 卷号 | 169期号:6 |
| ISSN号 | 0004-6256 |
| DOI | 10.3847/1538-3881/adcac5 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | The study on active binaries can provide detailed insights to understand how binarity affects dynamo actions inside stellar interiors. Here we report two active eclipsing binaries, USNO-B1.0 0743-0306638 and 0763-0282368, discovered in the Yunnan-Hong Kong wide-field photometric (YNHK) survey. Both of the two systems are detached binaries and show spot activities, while USNO-B1.0 0763-0282368 is more close to its Roche lobe. By means of the Wilson-Devinney (WD) code, their photometric solutions are determined based on parts of the YNHK photometric light curves. Furthermore, the spot distribution and evolution are investigated using time series of the YNHK light curves from 2016 to 2023. The results show that the spot activities appeared on the primary components for the two binary systems. There exist two kinds of spots: one is polar spots that lead to the variation of overall luminosity of the binaries, while the other is low-latitude spots that cause the rotational modulation. The polar spots behave more long-lived than the low-latitude spots on both binaries. For the low-latitude spot, its longitudinal distribution becomes more stable and closer to the substellar point as the binary system is close to the Roche lobe. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| WOS关键词 | RS-CANUM-VENATICORUM ; TERM STARSPOT ACTIVITY ; SIMULTANEOUS H ALPHA ; MAGNETIC-FLUX TUBES ; II PEGASI ; LIGHT CURVES ; LONGITUDES ; DYNAMICS ; SYSTEMS ; CYCLES |
| 资助项目 | National Natural Science Foundation of Chinahttps://doi.org/10.13039/501100001809; Chinese Academy of Sciences; People's Government of Yunnan Province[10373023]; People's Government of Yunnan Province[10773027]; People's Government of Yunnan Province[U1531121]; People's Government of Yunnan Province[11603068]; People's Government of Yunnan Province[12373039]; National Natural Science Foundation of China[202201AT070186]; National Natural Science Foundation of China[202305AS350009]; Yunnan Fundamental Research Projects; Yunnan Revitalization Talent Support Program (Young Talent Project)[202302AN360001]; International Centre of Supernovae, Yunnan Key Laboratory; China Manned Space Project |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001485447100001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Natural Science Foundation of Chinahttps://doi.org/10.13039/501100001809 ; Chinese Academy of Sciences ; People's Government of Yunnan Province[10373023, 10773027, U1531121, 11603068, 12373039] ; National Natural Science Foundation of China[202201AT070186, 202305AS350009] ; Yunnan Fundamental Research Projects ; Yunnan Revitalization Talent Support Program (Young Talent Project)[202302AN360001] ; International Centre of Supernovae, Yunnan Key Laboratory ; China Manned Space Project |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28303]  |
| 专题 | 云南天文台_系外行星研究组 云南天文台_丽江天文观测站（南方基地） 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.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; shenghonggu@ynao.ac.cn; 2.University of Chinese Academy of Sciences, Beijing 100049, 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.Hong Kong Astronomical Society, Hong Kong 999077, People's Republic of China; 5.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People's Republic of China; 6.China Three Gorges University, Yichang 443002, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Wang JH,Gu SH,Wang XB,et al. Spot Distribution and Evolution on Two New Active Binaries Discovered in the YNHK Survey[J]. ASTRONOMICAL JOURNAL,2025,169(6). |
| APA | 王建华.,顾盛宏.,王晓彬.,Yeung, Bill.,Ng, Eric.,...&朱昕雨.(2025).Spot Distribution and Evolution on Two New Active Binaries Discovered in the YNHK Survey.ASTRONOMICAL JOURNAL,169(6). |
| MLA | 王建华,et al."Spot Distribution and Evolution on Two New Active Binaries Discovered in the YNHK Survey".ASTRONOMICAL JOURNAL 169.6(2025). |
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来源：云南天文台
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