The Galactic Disk Phase Spirals at Different Galactic Positions Revealed by Gaia and LAMOST Data
文献类型：期刊论文
| 作者 | Wang,C.4; Huang,Y.5; Yuan,H.-B.6; Xiang,M.-S.2,7; Chen,B.-Q.5; Wang,H.-F.3,3,5; Wu,Y.-Q.2; Zhang,H.-W.4; Tian,Z.-J.1; Yang,Y.5 |
| 刊名 | The Astrophysical Journal Letters
 |
| 出版日期 | 2019-05-20 |
| 卷号 | 877期号:1 |
| ISSN号 | 2041-8205 |
| 关键词 | Galaxy: disk Galaxy: kinematics and dynamics Galaxy: structure |
| DOI | 10.3847/2041-8213/ab1fdd |
| 英文摘要 | Abstract We have investigated the distributions of stellar azimuthal and radial velocity components VΦ and VR in the vertical position–velocity plane Z–VZ across the Galactic disk of 6.34???R???12.34 kpc and using a Gaia and Gaia-LAMOST sample of stars. As found in previous works, the distributions exhibit significant spiral patterns. The VR distributions also show clear quadrupole patterns, which are the consequence of the well-known tilt of the velocity ellipsoid. The observed spiral and quadrupole patterns in the phase space plane vary strongly with radial and azimuthal positions. The phase spirals of VΦ become more and more relaxed as R increases. The spiral patterns of VΦ and VR and the quadrupole patterns of VR are strongest at ?2°? |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:2041-8205-877-1-AB1FDD |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/26328]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Department of Astronomy, Yunnan University, Kunming 650200, People's Republic of China 2.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China 3.Department of Astronomy, China West Normal University, Nanchong 637009, People's Republic of China 4.Department of Astronomy, Peking University, Beijing 100871, People’s Republic of China; wchun@pku.edu.cn 5.South-Western Institute for Astronomy Research, Yunnan University, Kunming, Yunnan 650091, People’s Republic of China; x.liu@ynu.edu.cn 6.Department of Astronomy, Beijing Normal University, Beijing 100875, People’s Republic of China 7.Max-Planck Institute for Astronomy, Konigstuhl, D-69117, Heidelberg, Germany |
| 推荐引用方式 GB/T 7714 | Wang,C.,Huang,Y.,Yuan,H.-B.,et al. The Galactic Disk Phase Spirals at Different Galactic Positions Revealed by Gaia and LAMOST Data[J]. The Astrophysical Journal Letters,2019,877(1). |
| APA | Wang,C..,Huang,Y..,Yuan,H.-B..,Xiang,M.-S..,Chen,B.-Q..,...&Liu,X.-W..(2019).The Galactic Disk Phase Spirals at Different Galactic Positions Revealed by Gaia and LAMOST Data.The Astrophysical Journal Letters,877(1). |
| MLA | Wang,C.,et al."The Galactic Disk Phase Spirals at Different Galactic Positions Revealed by Gaia and LAMOST Data".The Astrophysical Journal Letters 877.1(2019). |
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来源：国家天文台
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