Coincidence between Rotational Modulations of Coronal and Photospheric Activities on the Saturated Star AB Dor
文献类型：期刊论文
| 作者 | Xu FK(徐甫坤)1,2,3; Gu SH(顾盛宏)2,3,4 |
| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2026-04-01 |
| 卷号 | 171期号:4 |
| ISSN号 | 0004-6256 |
| DOI | 10.3847/1538-3881/ae4c3e |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | The magnetic connection among different layers is observed on the Sun and plays a key role in solar activity. It is also expected to be common on other active stars. However, controversies persist, especially in the case of saturated stars, whose underlying dynamo processes may differ from those of unsaturated stars. Here we demonstrate the existence of such a connection in the ultraactive star AB Dor, a young solar analogue in the saturated regime. Historically, the coronal topology of AB Dor had been extensively studied, however, ambiguities have persisted for a long time. Even the existence of its rotational modulation (RM) is underdebating, let alone its connection to the lower layers of the stellar atmosphere. Through joint analyses of quasi-contemporaneous optical and soft X-ray (SXR) observations over years, we have confirmed the existence of coronal RM in AB Dor, thereby ruling out the interpretation that the saturation is caused by fully covered active regions. The observed coincidence between the RM signals of optical and SXR data indicates a coronal-photospheric connection, supporting the interpretation of a solar-like scenario in saturated stars. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND |
| WOS关键词 | X-RAY-EMISSION ; DIFFERENTIAL ROTATION ; MAGNETIC ACTIVITY ; DORADUS ; EVOLUTION ; CONNECTION ; CYCLES ; PHOTOMETRY ; TOPOLOGY ; FIELDS |
| 资助项目 | MOST divided by National Natural Science Foundation of China (NSFC)[12288102] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001729039900001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | MOST divided by National Natural Science Foundation of China (NSFC)[12288102] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29077]  |
| 专题 | 云南天文台_系外行星研究组 |
| 通讯作者 | Xu FK(徐甫坤) |
| 作者单位 | 1.International Centre of Supernovae (ICESUN), Yunnan Key Laboratory of Supernova Research,Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; xufukun@ynao.ac.cn; 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; shenghonggu@ynao.ac.cn; 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; 4.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 101408, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Xu FK,Gu SH. Coincidence between Rotational Modulations of Coronal and Photospheric Activities on the Saturated Star AB Dor[J]. ASTRONOMICAL JOURNAL,2026,171(4). |
| APA | 徐甫坤,&顾盛宏.(2026).Coincidence between Rotational Modulations of Coronal and Photospheric Activities on the Saturated Star AB Dor.ASTRONOMICAL JOURNAL,171(4). |
| MLA | 徐甫坤,et al."Coincidence between Rotational Modulations of Coronal and Photospheric Activities on the Saturated Star AB Dor".ASTRONOMICAL JOURNAL 171.4(2026). |
入库方式： OAI收割
来源：云南天文台
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