中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 国家天文台
  3. 中国科学院国家天文台
  4. 光学天文研究部
Radio stars observed in the LAMOST spectral survey

文献类型：期刊论文

作者Yue, Qiang1; Lu, Hong-Peng1; Han, Xian-Ming L.1,4; Zhang, Yong2; Shi, Jian-Rong3; Zhang, Li-Yun1; Wang, Yue-Fei2; Hou, Yong-Hui2; Cao, Zi-Huang3
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2017-09-01
卷号17期号:10
关键词Stars: Chromosphere Stars: Activity Stars: Radio Stars: Spectroscopic
DOI10.1088/1674-4527/17/10/105
文献子类Article
英文摘要Radio stars have attracted astronomers' attention for several decades. To better understand the physics behind stellar radio emissions, it is important to study their optical behaviors. The LAMOST survey provides a large database for researching stellar spectroscopic properties of radio stars. In this work, we concentrate on their spectroscopic properties and infer physical properties from their spectra, such as stellar activity and variability. We mined big data from the LAMOST spectral survey Data Release 2 (DR2), published on 2016 June 30, by cross-matching them with radio stars from FIRST and other surveys. We obtained 783 good stellar spectra with high signal to noise ratio for 659 stars. The criteria for selection were positional coincidence within 1.5 '' and LAMOST objects classified as stars. We calculated the equivalent widths (EWs) of the Ca II H&K, H delta, H gamma, H beta, H alpha and Ca II IRT lines by integrating the line profiles. Using the EWs of the H alpha line, we detected 147 active stellar spectra of 89 objects having emissions above the H alpha continuum. There were also 36 objects with repeated spectra, 28 of which showed chromospheric activity variability. Furthermore, we found 14 radio stars emitting noticeably in the Ca II IRT lines. The low value of the EW8542/EW8498 ratio for these 14 radio stars possibly alludes to chromospheric plage regions.
WOS关键词DIGITAL SKY SURVEY ; MAIN-SEQUENCE STARS ; T-TAURI STARS ; CHROMOSPHERIC ACTIVITY ; MAGNETIC ACTIVITY ; TELESCOPE LAMOST ; ECHELLE SPECTRA ; EV-LACERTAE ; L-DWARFS ; X-RAY
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000415007500006
资助机构NSFC(U1631236 ; NSFC(U1631236 ; Chinese Academy of Sciences (CAS)(U1631236 ; Chinese Academy of Sciences (CAS)(U1631236 ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation ; National Science Foundation ; National Development and Reform Commission ; National Development and Reform Commission ; U1431114 ; U1431114 ; U1431114 ; U1431114 ; U1631109 ; U1631109 ; U1631109 ; U1631109 ; 11263001) ; 11263001) ; 11263001) ; 11263001) ; NSFC(U1631236 ; NSFC(U1631236 ; Chinese Academy of Sciences (CAS)(U1631236 ; Chinese Academy of Sciences (CAS)(U1631236 ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation ; National Science Foundation ; National Development and Reform Commission ; National Development and Reform Commission ; U1431114 ; U1431114 ; U1431114 ; U1431114 ; U1631109 ; U1631109 ; U1631109 ; U1631109 ; 11263001) ; 11263001) ; 11263001) ; 11263001)
源URL[http://ir.bao.ac.cn/handle/114a11/20205]  
专题国家天文台_光学天文研究部
作者单位1.Guizhou Univ, Dept Phys & Astron, Coll Phys, Guiyang 550025, Guizhou, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Nanjing Inst Astron Opt & Technol, Nanjing 210042, Jiangsu, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
4.Butler Univ, Dept Phys & Astron, Indianapolis, IN 46208 USA
推荐引用方式
GB/T 7714		 Yue, Qiang,Lu, Hong-Peng,Han, Xian-Ming L.,et al. Radio stars observed in the LAMOST spectral survey[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(10).
APA Yue, Qiang.,Lu, Hong-Peng.,Han, Xian-Ming L..,Zhang, Yong.,Shi, Jian-Rong.,...&Cao, Zi-Huang.(2017).Radio stars observed in the LAMOST spectral survey.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,17(10).
MLA Yue, Qiang,et al."Radio stars observed in the LAMOST spectral survey".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 17.10(2017).

入库方式： OAI收割

来源：国家天文台

浏览0
下载0
收藏0
其他版本

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。