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A filament eruption on the RS CVn-type star UX Ari

文献类型：期刊论文

作者Cao DT(曹东涛)1,3,4; Gu SH(顾盛宏)1,2,4
刊名ASTRONOMY & ASTROPHYSICS
出版日期2025-02-25
卷号695
关键词Sun: coronal mass ejections (CMEs) Sun: filaments prominences stars: chromospheres stars: coronae stars: flare
ISSN号0004-6361
DOI10.1051/0004-6361/202452857
产权排序第1完成单位
文献子类Article
英文摘要Context. Stellar flares can be accompanied by filament or prominence eruptions, which may lead to stellar coronal mass ejections (CMEs) that have significant impacts on surrounding exoplanets and stellar evolution. Aims. We report the capture of a filament eruption associated with an optical flare on the RS CVn-type star UX Ari. Methods. Based on high-resolution spectroscopic observations, we investigated the Doppler-shifted absorption features appeared in the H-alpha flaring spectra, which can be indicative of a filament eruption. Results. A huge optical flare was observed, which lasted for at least 150 hours and released an energy of about 1.47 x 10(37) erg in the H-alpha line. The corresponding bolometric white-light energy is converted to be 1.03 x 10(39) erg, indicating that the flare is comparable to the most intense stellar superflares. A blueshifted absorption feature with a bulk velocity of -143.9 km s(-1 )emerged in the H(alpha )line region during the initial phase of the flare, which then decelerated and turned into redshifted absorption. This suggests that a filament eruption happened and ultimately fell back toward the star, suggesting that it represents a failed filament eruption. The erupted filament mass of 8.5 - 15.0 x 10(20) g and the kinetic energy of 8.8 - 15.5 x 10(34) erg are derived. Furthermore, the relationship between the filament eruption and the flare is likely characterized by a sympathetic eruption.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
WOS关键词CORONAL MASS EJECTIONS ; MULTIWAVELENGTH OPTICAL OBSERVATIONS ; ACTIVE BINARY-SYSTEMS ; SIMULTANEOUS H ALPHA ; MAIN-SEQUENCE STARS ; CANUM-VENATICORUM ; LINE-PROFILES ; FLARE ; SUPERFLARES ; ASYMMETRY
资助项目National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences[10373023]; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences[10773027]; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences[11333006]; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences[U1531121]; National Natural Science Foundation of China (NSFC)[202201AT070186]; National Natural Science Foundation of China (NSFC)[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:001430766100002
出版者EDP SCIENCES S A
资助机构National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809 ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences[10373023, 10773027, 11333006, U1531121] ; National Natural Science Foundation of China (NSFC)[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/114a53/28182]  
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.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China;
2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 101408, China
3.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, China;
4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China;
推荐引用方式
GB/T 7714		 Cao DT,Gu SH. A filament eruption on the RS CVn-type star UX Ari[J]. ASTRONOMY & ASTROPHYSICS,2025,695.
APA 曹东涛,&顾盛宏.(2025).A filament eruption on the RS CVn-type star UX Ari.ASTRONOMY & ASTROPHYSICS,695.
MLA 曹东涛,et al."A filament eruption on the RS CVn-type star UX Ari".ASTRONOMY & ASTROPHYSICS 695(2025).

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来源：云南天文台

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