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The nearby spiral density-wave structure of the Galaxy: Line-of-sight and longitudinal velocities of 61 masers
Griv, E.1; Jiang, I. -G.2; Hou, L. -G.3; Ngeow, C. -C.4
2017-07-01
发表期刊ASTRONOMISCHE NACHRICHTEN
卷号338期号:6页码:729-739
摘要This paper is the eighth in a series presenting the results of the dynamical analysis of velocity fields of Galactic objects on the assumption that the system is subject to moderately unstable, low-amplitude, tightly wound, and rigidly rotating Lin-Shu density waves. The data of 61 masers associated with star-forming regions having distances d<4 kpc from the Sun and h<200 pc from the plane are collected from the work by Reid et al. Both line-of-sight v(los) and transverse along the Galactic longitude v(l)velocities of these objects are analyzed. It is shown that there may coexist at least two radial scales of irregularity of a velocity field with different wavelengths approximate to 2 and approximate to 3.5 kpc and amplitudes of the perturbed gravitational potential for all values of the number of spiral arms considered, m = 1, 2, 3, and 4. To be consistent with the current ideas as to the spiral structure of the Galaxy, we argue respectively that the Sun is located at the inner edge of the Cygnus-Orion arm (very close to the arm center), between the nearby inner Carina-Sagittarius and outer Perseus arms (closer to the inner one). Estimates obtained from an analysis of two independent velocities v(los) and v(l) are fairly consistent. As for us, the latter establishes further evidence to support the Lin-Shu wave proposal.
文章类型Article
关键词Galaxy: Kinematics And Dynamics Galaxy: Structure Galaxies: Spiral
WOS标题词Science & Technology ; Physical Sciences
资助者Israel Science Foundation ; Israel Science Foundation ; Israeli Ministry of Immigrant Absorption ; Israeli Ministry of Immigrant Absorption ; Binational U.S.-Israel Science Foundation ; Binational U.S.-Israel Science Foundation ; Ministry of Science and Technology in Taiwan ; Ministry of Science and Technology in Taiwan ; National Natural Science Foundation of China(11503033) ; National Natural Science Foundation of China(11503033) ; Israel Science Foundation ; Israel Science Foundation ; Israeli Ministry of Immigrant Absorption ; Israeli Ministry of Immigrant Absorption ; Binational U.S.-Israel Science Foundation ; Binational U.S.-Israel Science Foundation ; Ministry of Science and Technology in Taiwan ; Ministry of Science and Technology in Taiwan ; National Natural Science Foundation of China(11503033) ; National Natural Science Foundation of China(11503033)
DOI10.1002/asna.201713150
关键词[WOS]GALACTIC ROTATION CURVE ; MILKY-WAY-GALAXY ; DISK GALAXIES ; OPEN CLUSTERS ; STELLAR KINEMATICS ; UNSTABLE MODES ; YOUNG STARS ; OWN GALAXY ; ARMS ; PARAMETERS
收录类别SCI
语种英语
资助者Israel Science Foundation ; Israel Science Foundation ; Israeli Ministry of Immigrant Absorption ; Israeli Ministry of Immigrant Absorption ; Binational U.S.-Israel Science Foundation ; Binational U.S.-Israel Science Foundation ; Ministry of Science and Technology in Taiwan ; Ministry of Science and Technology in Taiwan ; National Natural Science Foundation of China(11503033) ; National Natural Science Foundation of China(11503033) ; Israel Science Foundation ; Israel Science Foundation ; Israeli Ministry of Immigrant Absorption ; Israeli Ministry of Immigrant Absorption ; Binational U.S.-Israel Science Foundation ; Binational U.S.-Israel Science Foundation ; Ministry of Science and Technology in Taiwan ; Ministry of Science and Technology in Taiwan ; National Natural Science Foundation of China(11503033) ; National Natural Science Foundation of China(11503033)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000408308300010
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/20144
专题射电天文研究部
作者单位1.Ben Gurion Univ Negev, Dept Phys, POB 653, IL-84105 Beer Sheva, Israel
2.Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan
3.Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China
4.Natl Cent Univ, Grad Inst Astron, Jhongli, Taiwan
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Griv, E.,Jiang, I. -G.,Hou, L. -G.,et al. The nearby spiral density-wave structure of the Galaxy: Line-of-sight and longitudinal velocities of 61 masers[J]. ASTRONOMISCHE NACHRICHTEN,2017,338(6):729-739.
APA Griv, E.,Jiang, I. -G.,Hou, L. -G.,&Ngeow, C. -C..(2017).The nearby spiral density-wave structure of the Galaxy: Line-of-sight and longitudinal velocities of 61 masers.ASTRONOMISCHE NACHRICHTEN,338(6),729-739.
MLA Griv, E.,et al."The nearby spiral density-wave structure of the Galaxy: Line-of-sight and longitudinal velocities of 61 masers".ASTRONOMISCHE NACHRICHTEN 338.6(2017):729-739.
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