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 | |
刊名 | ASTRONOMY & ASTROPHYSICS |
2012-02 | |
卷号 | 538 |
关键词 | binaries: eclipsing binaries: spectroscopic stars: activity stars: coronae stars: chromospheres |
ISSN号 | 0004-6361 |
通讯作者 | Cao, DT (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China. |
产权排序 | 第一完成单位 |
英文摘要 | 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. |
学科主题 | Astronomy & Astrophysics |
WOS标题词 | Science & Technology ; Physical Sciences |
类目[WOS] | Astronomy & Astrophysics |
研究领域[WOS] | Astronomy & Astrophysics |
关键词[WOS] | CA-II H ; CANUM-VENATICORUM ; CLOSE BINARIES ; ALPHA ; SYSTEMS ; STAR ; EMISSION |
收录类别 | SCI ; EI |
原文出处 | http://www.aanda.org/articles/aa/abs/2012/02/aa18184-11/aa18184-11.html |
语种 | 英语 |
WOS记录号 | WOS:000300614100130 |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/5225] |
专题 | 云南天文台_恒星物理研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
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 |
推荐引用方式 GB/T 7714 | Cao DT,Gu SH. 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.(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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