Further Investigation on Chromospheric and Prominence Activity of the RS Canum Venaticorum Star SZ Piscium
文献类型:期刊论文
作者 | 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 |
刊名 | The Astronomical Journal |
出版日期 | 2020-06-01 |
卷号 | 159期号:6页码:15 |
ISSN号 | 0004-6256 |
关键词 | Stellar activity Close binary stars High resolution spectroscopy Stellar chromospheres Stellar flares |
DOI | 10.3847/1538-3881/ab8f90 |
通讯作者 | Cao, Dongtao(dtcao@ynao.ac.cn) |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | 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. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星天文学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
WOS关键词 | MULTIWAVELENGTH OPTICAL OBSERVATIONS ; H-ALPHA VARIATIONS ; MAIN-SEQUENCE STAR ; BINARY-SYSTEMS ; ROTATIONAL MODULATION ; DIFFERENTIAL ROTATION ; DOPPLER IMAGES ; EMISSION ; FLARES ; TAURI |
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] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000539668100001 |
资助机构 | 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] |
源URL | [http://ir.ynao.ac.cn/handle/114a53/23444] |
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 |
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 |
推荐引用方式 GB/T 7714 | 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. |
入库方式: OAI收割
来源:云南天文台
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