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The Stellar Metallicity Distribution of the Galactic Halo Based on SCUSS and SDSS Data
Zuo, Wenbo1; Du, Cuihua1,2; Jing, Yingjie3; Gu, Jiayin4; Newberg, Heidi Jo2; Wu, Zhenyu5,6; Ma, Jun5,6; Zhou, Xu5
2017-05-20
Source PublicationASTROPHYSICAL JOURNAL
Volume841Issue:1
AbstractBased on the Sloan Digital Sky Survey and South Galactic Cap u-band Sky Survey (SCUSS), we simulate the photometric metallicity distribution functions (MDFs) of stars in the Galactic halo. The photometric metallicity of stars was estimated by a new Monte-Carlo method. Due to the use of a more reliable metallicity calibration method and more accurate u-band deep measurements from SCUSS, we can obtain more accurate MDFs of a large sample of distant stars in the Galactic halo. In this study, we select 78,092 F/G main-sequence turnoff stars (MSTO) in the. south Galactic cap, with 0.2. < (g- r)(0) < 0.4, as tracers of the stellar MDFs in the Galactic halo. The sample stars are divided into two height intervals above the Galactic plane: -8 < z < -4 kpc and -12 < z < -8 kpc. The MDFs of selected stars in each interval are well fit by a three-Gaussian model, with peaks at [Fe/H] approximate to -0.63, -1.45, and -2.0. The two metal-poor components correspond to the inner halo and outer halo, respectively. The fraction of the metal-rich component, which may be contributed by the substructure (such as Sagittarius stream or other streams) is about 10%. With limited kinematic estimation, we find the correlations between metallicity and kinematics. Our results provide. additional supporting evidence of duality of the Galactic halo.
SubtypeArticle
KeywordGalaxy: Abundances Galaxy: Halo Galaxy: Kinematics And Dynamics
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Science(U1231113) ; Chinese Academy of Science(U1231113) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Natural Foundation of China (NSFC)(11373033 ; National Natural Foundation of China (NSFC)(11373033 ; National Basic Research Program of China (973 Program)(2014CB845702 ; National Basic Research Program of China (973 Program)(2014CB845702 ; NSF grant(AST-1615688) ; NSF grant(AST-1615688) ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; University of Arizona ; University of Arizona ; Brazilian Participation Group ; Brazilian Participation Group ; Brookhaven National Laboratory ; Brookhaven National Laboratory ; Carnegie Mellon University ; Carnegie Mellon University ; University of Florida ; University of Florida ; French Participation Group ; French Participation Group ; German Participation Group ; German Participation Group ; Harvard University ; Harvard University ; Instituto de Astrofisica de Canarias ; Instituto de Astrofisica de Canarias ; Michigan State/Notre Dame/JINA Participation Group ; Michigan State/Notre Dame/JINA Participation Group ; Johns Hopkins University ; Johns Hopkins University ; Lawrence Berkeley National Laboratory ; Lawrence Berkeley National Laboratory ; Max Planck Institute for Astrophysics ; Max Planck Institute for Astrophysics ; Max Planck Institute for Extraterrestrial Physics ; Max Planck Institute for Extraterrestrial Physics ; New Mexico State University ; New Mexico State University ; New York University ; New York University ; Ohio State University ; Ohio State University ; Pennsylvania State University ; Pennsylvania State University ; University of Portsmouth ; University of Portsmouth ; Princeton University ; Princeton University ; Spanish Participation Group ; Spanish Participation Group ; University of Tokyo ; University of Tokyo ; University of Utah ; University of Utah ; Vanderbilt University ; Vanderbilt University ; University of Virginia ; University of Virginia ; University of Washington ; University of Washington ; Yale University ; Yale University ; 11373035) ; 11373035) ; 2014CB845704 ; 2014CB845704 ; 2013CB834902) ; 2013CB834902) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Science(U1231113) ; Chinese Academy of Science(U1231113) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Natural Foundation of China (NSFC)(11373033 ; National Natural Foundation of China (NSFC)(11373033 ; National Basic Research Program of China (973 Program)(2014CB845702 ; National Basic Research Program of China (973 Program)(2014CB845702 ; NSF grant(AST-1615688) ; NSF grant(AST-1615688) ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; University of Arizona ; University of Arizona ; Brazilian Participation Group ; Brazilian Participation Group ; Brookhaven National Laboratory ; Brookhaven National Laboratory ; Carnegie Mellon University ; Carnegie Mellon University ; University of Florida ; University of Florida ; French Participation Group ; French Participation Group ; German Participation Group ; German Participation Group ; Harvard University ; Harvard University ; Instituto de Astrofisica de Canarias ; Instituto de Astrofisica de Canarias ; Michigan State/Notre Dame/JINA Participation Group ; Michigan State/Notre Dame/JINA Participation Group ; Johns Hopkins University ; Johns Hopkins University ; Lawrence Berkeley National Laboratory ; Lawrence Berkeley National Laboratory ; Max Planck Institute for Astrophysics ; Max Planck Institute for Astrophysics ; Max Planck Institute for Extraterrestrial Physics ; Max Planck Institute for Extraterrestrial Physics ; New Mexico State University ; New Mexico State University ; New York University ; New York University ; Ohio State University ; Ohio State University ; Pennsylvania State University ; Pennsylvania State University ; University of Portsmouth ; University of Portsmouth ; Princeton University ; Princeton University ; Spanish Participation Group ; Spanish Participation Group ; University of Tokyo ; University of Tokyo ; University of Utah ; University of Utah ; Vanderbilt University ; Vanderbilt University ; University of Virginia ; University of Virginia ; University of Washington ; University of Washington ; Yale University ; Yale University ; 11373035) ; 11373035) ; 2014CB845704 ; 2014CB845704 ; 2013CB834902) ; 2013CB834902)
DOI10.3847/1538-4357/aa70e6
WOS KeywordDIGITAL SKY SURVEY ; MILKY-WAY TOMOGRAPHY ; METAL-POOR STARS ; INTERMEDIATE-LATITUDE ; SPECTROSCOPIC SURVEY ; ABUNDANCE RATIOS ; OPEN CLUSTERS ; DATA RELEASE ; SEGUE ; SAGITTARIUS
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Science(U1231113) ; Chinese Academy of Science(U1231113) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Natural Foundation of China (NSFC)(11373033 ; National Natural Foundation of China (NSFC)(11373033 ; National Basic Research Program of China (973 Program)(2014CB845702 ; National Basic Research Program of China (973 Program)(2014CB845702 ; NSF grant(AST-1615688) ; NSF grant(AST-1615688) ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; University of Arizona ; University of Arizona ; Brazilian Participation Group ; Brazilian Participation Group ; Brookhaven National Laboratory ; Brookhaven National Laboratory ; Carnegie Mellon University ; Carnegie Mellon University ; University of Florida ; University of Florida ; French Participation Group ; French Participation Group ; German Participation Group ; German Participation Group ; Harvard University ; Harvard University ; Instituto de Astrofisica de Canarias ; Instituto de Astrofisica de Canarias ; Michigan State/Notre Dame/JINA Participation Group ; Michigan State/Notre Dame/JINA Participation Group ; Johns Hopkins University ; Johns Hopkins University ; Lawrence Berkeley National Laboratory ; Lawrence Berkeley National Laboratory ; Max Planck Institute for Astrophysics ; Max Planck Institute for Astrophysics ; Max Planck Institute for Extraterrestrial Physics ; Max Planck Institute for Extraterrestrial Physics ; New Mexico State University ; New Mexico State University ; New York University ; New York University ; Ohio State University ; Ohio State University ; Pennsylvania State University ; Pennsylvania State University ; University of Portsmouth ; University of Portsmouth ; Princeton University ; Princeton University ; Spanish Participation Group ; Spanish Participation Group ; University of Tokyo ; University of Tokyo ; University of Utah ; University of Utah ; Vanderbilt University ; Vanderbilt University ; University of Virginia ; University of Virginia ; University of Washington ; University of Washington ; Yale University ; Yale University ; 11373035) ; 11373035) ; 2014CB845704 ; 2014CB845704 ; 2013CB834902) ; 2013CB834902) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Science(U1231113) ; Chinese Academy of Science(U1231113) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Natural Foundation of China (NSFC)(11373033 ; National Natural Foundation of China (NSFC)(11373033 ; National Basic Research Program of China (973 Program)(2014CB845702 ; National Basic Research Program of China (973 Program)(2014CB845702 ; NSF grant(AST-1615688) ; NSF grant(AST-1615688) ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; University of Arizona ; University of Arizona ; Brazilian Participation Group ; Brazilian Participation Group ; Brookhaven National Laboratory ; Brookhaven National Laboratory ; Carnegie Mellon University ; Carnegie Mellon University ; University of Florida ; University of Florida ; French Participation Group ; French Participation Group ; German Participation Group ; German Participation Group ; Harvard University ; Harvard University ; Instituto de Astrofisica de Canarias ; Instituto de Astrofisica de Canarias ; Michigan State/Notre Dame/JINA Participation Group ; Michigan State/Notre Dame/JINA Participation Group ; Johns Hopkins University ; Johns Hopkins University ; Lawrence Berkeley National Laboratory ; Lawrence Berkeley National Laboratory ; Max Planck Institute for Astrophysics ; Max Planck Institute for Astrophysics ; Max Planck Institute for Extraterrestrial Physics ; Max Planck Institute for Extraterrestrial Physics ; New Mexico State University ; New Mexico State University ; New York University ; New York University ; Ohio State University ; Ohio State University ; Pennsylvania State University ; Pennsylvania State University ; University of Portsmouth ; University of Portsmouth ; Princeton University ; Princeton University ; Spanish Participation Group ; Spanish Participation Group ; University of Tokyo ; University of Tokyo ; University of Utah ; University of Utah ; Vanderbilt University ; Vanderbilt University ; University of Virginia ; University of Virginia ; University of Washington ; University of Washington ; Yale University ; Yale University ; 11373035) ; 11373035) ; 2014CB845704 ; 2014CB845704 ; 2013CB834902) ; 2013CB834902)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000402310500045
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8794
Collection光学天文研究部
Affiliation1.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
2.Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA
3.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100012, Peoples R China
4.Wuhan Univ Technol, Dept Phys, Wuhan 430000, Peoples R China
5.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China
6.Univ Chinese Acad Sci, Coll Astron & Space Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zuo, Wenbo,Du, Cuihua,Jing, Yingjie,et al. The Stellar Metallicity Distribution of the Galactic Halo Based on SCUSS and SDSS Data[J]. ASTROPHYSICAL JOURNAL,2017,841(1).
APA Zuo, Wenbo.,Du, Cuihua.,Jing, Yingjie.,Gu, Jiayin.,Newberg, Heidi Jo.,...&Zhou, Xu.(2017).The Stellar Metallicity Distribution of the Galactic Halo Based on SCUSS and SDSS Data.ASTROPHYSICAL JOURNAL,841(1).
MLA Zuo, Wenbo,et al."The Stellar Metallicity Distribution of the Galactic Halo Based on SCUSS and SDSS Data".ASTROPHYSICAL JOURNAL 841.1(2017).
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