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Prominence activation, optical flare, and post-flare loops on the RS Canum Venaticorum star SZ Piscium
Cao DT(曹东涛)1,2; Gu SH(顾盛宏)1,2,3; Ge, Jian4; Wang, Tinggui5; Zhou, Jilin6; Chang L(常亮)1,2; Wolter, U.7; Mittag, M.7; Schmitt, J. H. M. M.7; Perdelwitz, V.7
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2019
Volume482Issue:1Pages:988-998
DOI10.1093/mnras/sty2768
Contribution Rank第1完成单位
Indexed BySCI
Keywordstars: activity binaries: spectroscopic stars: chromospheres circumstellar matter stars: flare stars: individual: SZ Psc
Abstract

We present the results of time-resolved high-resolution spectroscopic observations of the very active RS Canum Venaticorum (RS CVn) star SZ Piscium (SZ Psc), obtained during two consecutive observing nights on 2011 October 24 and 25. Several optical chromospheric activity indicators are analysed using the spectral subtraction technique, which show the remarkably different behaviour between two nights. Gradually blue-shifted and strengthened excess absorption features presented in the series of the subtracted spectra (especially for the H alpha, He I D-3, and H beta lines), as a result of active stellar prominence that is rising its height along the line of our sight, was detected in the observations on October 24. This prominence activation event was probably associated with the subsequently occurred optical flare, and part of that flare decay phase was hunted in the observations on October 25. The flare was characterized by the prominent He I D-3 line emission, as well as stronger chromospheric emission in the H alpha, H beta, and other active lines. The gradual decay of flare was accompanied by an obviously developmental absorption feature in the blue wing of the H alpha and other active lines, which could be explained as cool post-flare loops which projected against the bright flare background. Therefore, a series of possibly associated magnetic activity phenomena, including flare-related prominence activation, optical flare, and post-flare loops, were detected during our observations.

Funding ProjectChinese Academy of Sciences (CAS) ; People's Government of Yunnan Province ; Project Based Personnel Exchange Program (PPP) ; China Scholarship Council (CSC) ; German Academic Exchange Service (DAAD)[[2016] 6041] ; National Natural Science Foundation of China (NSFC)[10373023] ; National Natural Science Foundation of China (NSFC)[10773027] ; National Natural Science Foundation of China (NSFC)[11333006] ; CAS[KJCX2-YW-T24] ; CAS 'Light of West China' Program
Funding OrganizationChinese Academy of Sciences (CAS) ; People's Government of Yunnan Province ; Project Based Personnel Exchange Program (PPP) ; China Scholarship Council (CSC) ; German Academic Exchange Service (DAAD)[[2016] 6041] ; National Natural Science Foundation of China (NSFC)[10373023, 10773027, 11333006] ; CAS[KJCX2-YW-T24] ; CAS 'Light of West China' Program
Language英语
Subject Area天文学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS IDWOS:000454575300068
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordACTIVE BINARY-SYSTEMS ; RAPIDLY ROTATING STARS ; SIMULTANEOUS H ALPHA ; X-RAY OBSERVATIONS ; CHROMOSPHERIC ACTIVITY ; CLOSE BINARIES ; DIFFERENTIAL ROTATION ; DOPPLER IMAGES ; MULTIWAVELENGTH ; EMISSION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/18804
Collection系外行星研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorCao DT(曹东涛); Gu SH(顾盛宏)
Affiliation1.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.University of Chinese Academy of Sciences, Beijing 100049, China
4.Department of Astronomy, University of Florida, Bryant Space Science Center, Gainesville, FL 32611, USA
5.Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026, China
6.Department of Astronomy and Key Laboratory of Modern Astronomy and Astrophysics in Ministry of Education, Nanjing University, Nanjing 210093, China
7.Hamburger Sternwarte, Universitat Hamburg, Hamburg 21029, Germany
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Cao DT,Gu SH,Ge, Jian,et al. Prominence activation, optical flare, and post-flare loops on the RS Canum Venaticorum star SZ Piscium[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,482(1):988-998.
APA Cao DT.,Gu SH.,Ge, Jian.,Wang, Tinggui.,Zhou, Jilin.,...&Perdelwitz, V..(2019).Prominence activation, optical flare, and post-flare loops on the RS Canum Venaticorum star SZ Piscium.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,482(1),988-998.
MLA Cao DT,et al."Prominence activation, optical flare, and post-flare loops on the RS Canum Venaticorum star SZ Piscium".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 482.1(2019):988-998.
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