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

doi:10.1051/0004-6361/202452857

YNAO OpenIR > 系外行星研究组

	A filament eruption on the RS CVn-type star UX Ari
	Cao DT(曹东涛)1,2,3 ; Gu SH(顾盛宏)1,2,4
发表期刊	ASTRONOMY & ASTROPHYSICS
	2025-02-25
卷号	695
DOI	10.1051/0004-6361/202452857
产权排序	第1完成单位
收录类别	SCI ; EI
关键词	Sun: coronal mass ejections (CMEs) Sun: filaments prominences stars: chromospheres stars: coronae stars: flare
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.
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
项目资助者	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
语种	英语
学科领域	天文学 ; 恒星与银河系
文章类型	Article
出版者	EDP SCIENCES S A
出版地	17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
ISSN	0004-6361
URL	查看原文
WOS记录号	WOS:001430766100002
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	CORONAL MASS EJECTIONS ; MULTIWAVELENGTH OPTICAL OBSERVATIONS ; ACTIVE BINARY-SYSTEMS ; SIMULTANEOUS H ALPHA ; MAIN-SEQUENCE STARS ; CANUM-VENATICORUM ; LINE-PROFILES ; FLARE ; SUPERFLARES ; ASYMMETRY
EI入藏号	20251017987558
EI主题词	Kinetic energy
EI分类号	103 Biology - 1301.1.1 Mechanics - 1301.1.3 Atomic and Molecular Physics - 1302.1.2 Extraterrestrial Physics and Stellar Phenomena
引用统计
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/28182
专题	系外行星研究组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, China; 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China; 3.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, China; 4.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 101408, China
第一作者单位	中国科学院云南天文台
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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