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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
Source PublicationASTROPHYSICAL JOURNAL
Volume844Issue:2
AbstractWe 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.
SubtypeArticle
KeywordGalaxy: Kinematics And Dynamics
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational 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
WOS KeywordOUTER LINDBLAD RESONANCE ; SPIRAL STRUCTURE ; GALACTIC BAR ; VELOCITY DISTRIBUTION ; KINEMATIC GROUPS ; MOVING GROUPS ; DATA RELEASE ; CHAOS ; RAVE ; DISC
Indexed BySCI
Language英语
Funding OrganizationNational 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 Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000406841700005
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/20068
Collection光学天文研究部
Affiliation1.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
Recommended Citation
GB/T 7714
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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