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Chromospheric activity on late-type star LQ Hya
Zhang, LY1,2; Pi, QF1,2; Zhu, ZZ1,2; Zhang XL(张西亮)2,3; Li, ZM4; Zhang, LY (reprint author), Guizhou Univ, Dept Phys, Coll Sci, Guiyang 550025, Peoples R China.
发表期刊NEW ASTRONOMY
2014-10
卷号32页码:1-5
DOI10.1016/j.newast.2014.02.010
产权排序第3完成单位
收录类别SCI
关键词Stars : Late Type Stars : Individual Lq Hya Stars : Chromosphere Stars : Spectroscopy
摘要We present new high-resolution echelle spectra of LQ Hya to study its chromospheric activity. We analyzed our spectroscopic observations including several optical indicators of chromospheric activity (the He I D-3, Na I D-1, D-2, H-alpha, and Ca II infrared triplet lines), by means of the spectral subtraction technique. All the chromospheric activity indicators (the Na I D-1, D-2, H-alpha, and Ca II IRT lines) confirmed chromospheric emissions. The ratio of EW8542/EW8498 for LQ Hya is around 1.5, which indicates that there is optically thick emission in a plage-like region. As for the Ca II IRT and H-alpha lines, it seems that there is also a weak rotation modulation of chromospheric activity in our data, which might be explained by the strong plage or flare. The contemporaneous monitoring of photospheric and chromospheric emissions for LQ Hya indicate chromospheric plages might spatially associated with the spots. (C) 2014 Elsevier B.V. All rights reserved.
项目资助者Joint Fund of Astronomy of the National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) [10978010, 11263001] ; Open Project Program of the Key Laboratory of Optical Astronomy ; NAOC ; CAS
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1384-1076
URL查看原文
WOS记录号WOS:000336874400001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]RS-CANUM-VENATICORUM ; MULTIWAVELENGTH OPTICAL OBSERVATIONS ; TIME-RESOLVED SPECTROSCOPY ; SHORT-PERIOD SYSTEMS ; H-ALPHA EMISSION ; BINARY-SYSTEMS ; MAGNETIC ACTIVITY ; URSAE MAJORIS ; AB-DORADUS ; HYDRAE
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5437
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
通讯作者Zhang, LY (reprint author), Guizhou Univ, Dept Phys, Coll Sci, Guiyang 550025, Peoples R China.
作者单位1.College of Science/Department of Physics & NAOC-GZU-Sponsored Center for Astronomy Research, Guizhou University, Guiyang 550025, PR China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, PR China
3.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, PR China
4.Institute for Astronomy and History of Science and Technology, Dali University, Dali 671003, PR China
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GB/T 7714
Zhang, LY,Pi, QF,Zhu, ZZ,et al. Chromospheric activity on late-type star LQ Hya[J]. NEW ASTRONOMY,2014,32:1-5.
APA Zhang, LY,Pi, QF,Zhu, ZZ,Zhang XL,Li, ZM,&Zhang, LY .(2014).Chromospheric activity on late-type star LQ Hya.NEW ASTRONOMY,32,1-5.
MLA Zhang, LY,et al."Chromospheric activity on late-type star LQ Hya".NEW ASTRONOMY 32(2014):1-5.
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