| 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
| |
| 发表期刊 | NEW ASTRONOMY
 |
| 2014-10 | |
| 卷号 | 32页码:1-5 |
| DOI | 10.1016/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. |
| 资助项目 | Joint Fund of Astronomy of the National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS)[10978010] ; Chinese Academy of Sciences (CAS)[11263001] ; Open Project Program of the Key Laboratory of Optical Astronomy ; NAOC ; CAS |
| 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 | 天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化 |
| 文章类型 | Article |
| 出版者 | ELSEVIER SCIENCE BV |
| 出版地 | PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
| ISSN | 1384-1076 |
| 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 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/5437 |
| 专题 | 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 |
| 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 |
| 推荐引用方式 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.(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. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Chromospheric activi（696KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论