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Further Investigation on Chromospheric and Prominence Activity of the RS Canum Venaticorum Star SZ Piscium
Cao DT(曹东涛)1,2; Gu SH(顾盛宏)1,2,3; Wolter, U.4; Mittag, M.4; Schmitt, J. H. M. M.4
通讯作者Cao, Dongtao(dtcao@ynao.ac.cn)
发表期刊The Astronomical Journal
2020-06-01
卷号159期号:6页码:15
DOI10.3847/1538-3881/ab8f90
产权排序第1完成单位
收录类别SCI
关键词Stellar activity Close binary stars High resolution spectroscopy Stellar chromospheres Stellar flares
摘要

To continue our study on chromospheric activity and detection for possible prominence events of the very active RS Canum Venaticorum star SZ?Piscium (SZ Psc), long-term high-resolution spectroscopic observations were obtained during several observing runs from 2014 to 2018. Based on the spectral subtraction technique, the chromospheric emission of the Ca ii IRT (λ8662, λ8542, and λ8498), Hα, Na i D1, D2 doublet, Hβ, and Ca ii H & K lines is mainly associated with the K1?IV primary star of the SZ?Psc system, in good agreement with the previous studies, and the F8?V secondary star also shows some chromospheric emission, implying its active chromosphere. Moreover, an optical flare characterized by the He i D3 line emission together with stronger emission in the other indicators was detected. Furthermore, two chromospheric active longitudes around the two quadratures of the system were identified for most of the time, and the chromospheric activity shows significant changes during a few orbital cycles. The chromospheric activity level seems to show a long-term variation during our observations. There were some excess absorption features in the subtracted Hα line and the other activity indicators, which would be caused by prominence-like materials associated with the K1?IV primary star of the system. Prominence materials could absorb the chromospheric emission and continuum from the K1?IV primary star and even the F8?V secondary one.

资助项目Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; National Natural Science Foundation of China[10373023] ; National Natural Science Foundation of China[10773027] ; National Natural Science Foundation of China[11333006] ; National Natural Science Foundation of China[U1531121] ; National Natural Science Foundation of China[11903074] ; West Light Foundation of the Chinese Academy of Sciences ; Sino-German Center for Research Promotion[GZ1419] ; Chinese Academy of Sciences[KJCX2-YW-T24]
项目资助者Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; National Natural Science Foundation of China[10373023, 10773027, 11333006, U1531121, 11903074] ; West Light Foundation of the Chinese Academy of Sciences ; Sino-German Center for Research Promotion[GZ1419] ; Chinese Academy of Sciences[KJCX2-YW-T24]
语种英语
学科领域天文学 ; 恒星与银河系 ; 恒星天文学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6256
URL查看原文
WOS记录号WOS:000539668100001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]MULTIWAVELENGTH OPTICAL OBSERVATIONS ; H-ALPHA VARIATIONS ; MAIN-SEQUENCE STAR ; BINARY-SYSTEMS ; ROTATIONAL MODULATION ; DIFFERENTIAL ROTATION ; DOPPLER IMAGES ; EMISSION ; FLARES ; TAURI
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/23445
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
通讯作者Cao DT(曹东涛)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China
3.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China
4.Hamburger sternwarte, Hamburg D-21029, Germany
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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Cao DT,Gu SH,Wolter, U.,et al. Further Investigation on Chromospheric and Prominence Activity of the RS Canum Venaticorum Star SZ Piscium[J]. The Astronomical Journal,2020,159(6):15.
APA Cao DT,Gu SH,Wolter, U.,Mittag, M.,&Schmitt, J. H. M. M..(2020).Further Investigation on Chromospheric and Prominence Activity of the RS Canum Venaticorum Star SZ Piscium.The Astronomical Journal,159(6),15.
MLA Cao DT,et al."Further Investigation on Chromospheric and Prominence Activity of the RS Canum Venaticorum Star SZ Piscium".The Astronomical Journal 159.6(2020):15.
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