Kinematics and activity of M dwarfs in LAMOST DR1
文献类型：期刊论文
| 作者 | Yi, Zhen-Ping1,2,3; Luo, A-Li1 ; Zhao, Jing-Kun1; Song, Yi-Han1; Pan, Jing-Chang2; Zhao, Yong-Heng1; Zhang, Yong4; Song Yihan; Luo Ali; Zhao Yongheng
|
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2015-06-01 |
| 卷号 | 15期号:6页码:860-870 |
| 关键词 | stars: kinematics stars: magnetic fields stars: low-mass, brown dwarfs stars: fundamental parameters |
| 英文摘要 | We report on the first investigation into kinematics and chromospheric activity of M dwarfs from the Guo Shou Jing Telescope (also called the Large Sky Area Multi-Object Fiber Spectroscopic Telescope - LAMOST) data release one (DR1). The sample comprises 71 304 M dwarfs. Their fundamental parameters such as spectral types, radial velocities, important molecular band indices and magnetic activities are measured. Their distances are determined by a spectroscopic parallax relation. Space motion (U, V, W) and Galactocentric cylindrical coordinates (R, theta, Z) for the M dwarfs are also computed. We examine velocity dispersion as a function of height from the Galactic plane and find that all three components of velocity dispersion increase with height as measured with respect to the Galactic plane. The investigation into chromospheric activities along the height from the Galactic plane confirms that M dwarfs closer to the Galactic plane are more likely to be active. We take a pure kinematical approach to select thin disk stars and thick disk stars from our sample, then to investigate the differences in properties between these two populations. Our analysis is in excellent agreement with previous studies and leads to a better understanding of the structure of the Galactic disk. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000355138900008 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5687]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Shandong Univ, Weihai 264209, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Natl Astron Observ, Nanjing Inst Astron Opt & Technol, Nanjing 210042, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yi, Zhen-Ping,Luo, A-Li,Zhao, Jing-Kun,et al. Kinematics and activity of M dwarfs in LAMOST DR1[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2015,15(6):860-870. |
| APA | Yi, Zhen-Ping.,Luo, A-Li.,Zhao, Jing-Kun.,Song, Yi-Han.,Pan, Jing-Chang.,...&Zhao Jingkun.(2015).Kinematics and activity of M dwarfs in LAMOST DR1.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,15(6),860-870. |
| MLA | Yi, Zhen-Ping,et al."Kinematics and activity of M dwarfs in LAMOST DR1".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 15.6(2015):860-870. |
入库方式： OAI收割
来源：国家天文台
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