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Stellar Stream Candidates in the Solar Neighborhood Found in the LAMOST DR3 and TGAS
Liang, X. L.1,2; Zhao, J. K.1; Oswalt, T. D.3; Chen, Y. Q.1,2; Zhang, L.1; Zhao, G.1,2
2017-08-01
发表期刊ASTROPHYSICAL JOURNAL
卷号844期号:2
摘要We have cross-matched the LAMOST DR3 with the Gaia DR1 TGAS catalogs and obtained a sample of 166,827 stars with reliable kinematics. A technique based on the wavelet transform was applied to detect significant overdensities in velocity space among five subsamples divided by spatial position. In total, 16 significant overdensities of stars with very similar kinematics were identified. Among these, four are new stream candidates and the rest are previously known groups. Both the U-V velocity and metallicity distributions of the local sample show a clear gap between the Hercules structure and the Hyades-Pleiades structure. The U-V positions of these peaks shift with the spatial position. Following a description of our analysis, we speculate on possible origins of our stream candidates.
文章类型Article
关键词Galaxy: Kinematics And Dynamics
WOS标题词Science & Technology ; Physical Sciences
资助者National Natural Science Foundation of China(11390371 ; National Natural Science Foundation of China(11390371 ; National Key Basic Research Program of China (973 program)(2014CB845701 ; National Key Basic Research Program of China (973 program)(2014CB845701 ; US National Science Foundation(AST-1358787) ; US National Science Foundation(AST-1358787) ; National Development and Reform Commission ; National Development and Reform Commission ; 11233004 ; 11233004 ; 2014CB845703) ; 2014CB845703) ; U1431106 ; U1431106 ; 11573035 ; 11573035 ; 11625313) ; 11625313) ; National Natural Science Foundation of China(11390371 ; National Natural Science Foundation of China(11390371 ; National Key Basic Research Program of China (973 program)(2014CB845701 ; National Key Basic Research Program of China (973 program)(2014CB845701 ; US National Science Foundation(AST-1358787) ; US National Science Foundation(AST-1358787) ; National Development and Reform Commission ; National Development and Reform Commission ; 11233004 ; 11233004 ; 2014CB845703) ; 2014CB845703) ; U1431106 ; U1431106 ; 11573035 ; 11573035 ; 11625313) ; 11625313)
DOI10.3847/1538-4357/aa7cf7
关键词[WOS]OUTER LINDBLAD RESONANCE ; SPIRAL STRUCTURE ; GALACTIC BAR ; VELOCITY DISTRIBUTION ; KINEMATIC GROUPS ; MOVING GROUPS ; DATA RELEASE ; CHAOS ; RAVE ; DISC
收录类别SCI
语种英语
资助者National Natural Science Foundation of China(11390371 ; National Natural Science Foundation of China(11390371 ; National Key Basic Research Program of China (973 program)(2014CB845701 ; National Key Basic Research Program of China (973 program)(2014CB845701 ; US National Science Foundation(AST-1358787) ; US National Science Foundation(AST-1358787) ; National Development and Reform Commission ; National Development and Reform Commission ; 11233004 ; 11233004 ; 2014CB845703) ; 2014CB845703) ; U1431106 ; U1431106 ; 11573035 ; 11573035 ; 11625313) ; 11625313) ; National Natural Science Foundation of China(11390371 ; National Natural Science Foundation of China(11390371 ; National Key Basic Research Program of China (973 program)(2014CB845701 ; National Key Basic Research Program of China (973 program)(2014CB845701 ; US National Science Foundation(AST-1358787) ; US National Science Foundation(AST-1358787) ; National Development and Reform Commission ; National Development and Reform Commission ; 11233004 ; 11233004 ; 2014CB845703) ; 2014CB845703) ; U1431106 ; U1431106 ; 11573035 ; 11573035 ; 11625313) ; 11625313)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000406841700005
引用统计
被引频次:5[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/114a11/20068
专题光学天文研究部
作者单位1.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.Embry Riddle Aeronaut Univ, 600 South Clyde Morris Blvd, Daytona Beach, FL 32114 USA
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Liang, X. L.,Zhao, J. K.,Oswalt, T. D.,et al. Stellar Stream Candidates in the Solar Neighborhood Found in the LAMOST DR3 and TGAS[J]. ASTROPHYSICAL JOURNAL,2017,844(2).
APA Liang, X. L.,Zhao, J. K.,Oswalt, T. D.,Chen, Y. Q.,Zhang, L.,&Zhao, G..(2017).Stellar Stream Candidates in the Solar Neighborhood Found in the LAMOST DR3 and TGAS.ASTROPHYSICAL JOURNAL,844(2).
MLA Liang, X. L.,et al."Stellar Stream Candidates in the Solar Neighborhood Found in the LAMOST DR3 and TGAS".ASTROPHYSICAL JOURNAL 844.2(2017).
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