New observations of chromospheric and prominence activity on the RS CVn-type binary SZ Piscium

doi:10.1051/0004-6361/201118184

YNAO OpenIR > 恒星物理研究组

	New observations of chromospheric and prominence activity on the RS CVn-type binary SZ Piscium
	Cao DT(曹东涛)1,2,3 ; Gu SH(顾盛宏)1,2 ; Cao, DT (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊	ASTRONOMY & ASTROPHYSICS
	2012-02
卷号	538
DOI	10.1051/0004-6361/201118184
产权排序	第1完成单位
收录类别	SCI ; EI
关键词	Binaries: Eclipsing Binaries: Spectroscopic Stars: Activity Stars: Coronae Stars: Chromospheres
摘要	Aims. New high-resolution spectroscopic observations were made for the RS CVn-type binary SZ Psc aimed at searching for evidence of stellar prominences in this system and studying its chromospheric activity. Methods. By means of the spectral subtraction technique, we searched for prominence-like events in the H-alpha spectra, and also analyzed several optical chromospheric activity indicators (the He (I) D-3, Na (I) D-1, D-2, H-alpha, and Ca (II) IRT lines) included in our observations. Results. The emission in the H-alpha and Ca (II) IRT lines show that the cooler component is very active, supporting earlier work. Notably, some absorption features are detected in the subtracted H-alpha profiles, and one of them may result from prominence-like material on the cooler component of the system. According to a model of stellar prominences, the distance of the prominence from the rotation axis of the cooler component is calculated to be close to the corotation radius and to exceed the Roche lobe of the cooler component.
项目资助者	Xinglong station of the National Astronomical Observatories ; NSFC [10373023, 10773027]
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-6361
URL	查看原文
归档日期	2012-08-17
WOS记录号	WOS:000300614100130
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	CA-II H ; CANUM-VENATICORUM ; CLOSE BINARIES ; ALPHA ; SYSTEMS ; STAR ; EMISSION
引用统计	被引频次：9[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/114a53/5225
专题	恒星物理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 (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位	1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, PR China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, PR China 3.Graduate University of Chinese Academy of Sciences, Beijing 100049, PR 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,Cao, DT . New observations of chromospheric and prominence activity on the RS CVn-type binary SZ Piscium[J]. ASTRONOMY & ASTROPHYSICS,2012,538.
APA	Cao DT,Gu SH,&Cao, DT .(2012).New observations of chromospheric and prominence activity on the RS CVn-type binary SZ Piscium.ASTRONOMY & ASTROPHYSICS,538.
MLA	Cao DT,et al."New observations of chromospheric and prominence activity on the RS CVn-type binary SZ Piscium".ASTRONOMY & ASTROPHYSICS 538(2012).

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