Further Investigation on Chromospheric Activity Patterns of the RS Canum Venaticorum Star V711 Tauri

doi:10.3847/1538-3881/adb5fe

YNAO OpenIR > 系外行星研究组

	Further Investigation on Chromospheric Activity Patterns of the RS Canum Venaticorum Star V711 Tauri
	Cao DT(曹东涛)1,2,3 ; Gu SH(顾盛宏)1,2,4
发表期刊	ASTRONOMICAL JOURNAL
	2025-04-01
卷号	169 期号:4
DOI	10.3847/1538-3881/adb5fe
产权排序	第1完成单位
收录类别	SCI
摘要	We present new long-term spectroscopic observations of the very active RS Canum Venaticorum (RS CVn) star V711 Tauri (V711 Tau), obtained during several observing runs from 2005 to 2021. By means of the spectral-subtraction technique, several optical chromospheric activity indicators Ca ii infrared triplet, H alpha, Na i D1, D2 doublet, He i D3, and H beta lines, are analyzed. V711 Tau shows strong excess emission in the chromospheric activity lines, and the emission is mainly associated with the K1 IV primary component. The G5 V secondary component also shows weak emission features. There are four optical flare events during our observations, characterized by the He i D3 line emission features and stronger emission in other activity lines, which have similar order of magnitude as the strong flares of other active RS CVn-type stars. We separate our long-term observations to twelve observing groups, and find that V711 Tau has two active longitudes around phases 0.25 and 0.75 to dominate the activity in most of time. The chromospheric activity level shows a long-term variation, indicating possible chromospheric activity cycle. Moreover, a close spatial connection between photospheric spots and chromospheric active regions in short and long timescale is found for V711 Tau.
资助项目	MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809; Open Project Program of the CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences; 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[11903074]; 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	MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809 ; Open Project Program of the CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province[10373023, 10773027, U1531121, 11903074] ; 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	IOP Publishing Ltd
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN	0004-6256
URL	查看原文
WOS记录号	WOS:001441246800001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	MULTIWAVELENGTH OPTICAL OBSERVATIONS ; BINARY HR-1099 V711-TAU ; SIMULTANEOUS H ALPHA ; ROTATIONAL MODULATION ; DIFFERENTIAL ROTATION ; PROMINENCE ACTIVITY ; LAMBDA-ANDROMEDAE ; MAGNETIC CYCLES ; II-PEGASI ; LQ-HYDRAE
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/114a53/28192
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, People's Republic of China; [email protected], [email protected]; 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 3.International Centre of Supernovae, Yunnan Key Laboratory, 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
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. Further Investigation on Chromospheric Activity Patterns of the RS Canum Venaticorum Star V711 Tauri[J]. ASTRONOMICAL JOURNAL,2025,169(4).
APA	曹东涛,&顾盛宏.(2025).Further Investigation on Chromospheric Activity Patterns of the RS Canum Venaticorum Star V711 Tauri.ASTRONOMICAL JOURNAL,169(4).
MLA	曹东涛,et al."Further Investigation on Chromospheric Activity Patterns of the RS Canum Venaticorum Star V711 Tauri".ASTRONOMICAL JOURNAL 169.4(2025).

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