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Stellar Mass Distribution and Star Formation History of the Galactic Disk Revealed by Mono-age Stellar Populations from LAMOST

文献类型：期刊论文

作者Xiang, Maosheng2; Shi, Jianrong2,3; Liu, Xiaowei4,5; Yuan, Haibo1; Chen, Bingqiu4; Huang, Yang4; Wang, Chun5; Wu, Yaqian1; Tian, Zhijia5; Huo, Zhiying3
刊名ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期2018-08-01
卷号237期号:2页码:30
关键词galaxies: star formation Galaxy: disk Galaxy: evolution Galaxy: stellar content Galaxy: structure solar neighborhood
ISSN号0067-0049
DOI10.3847/1538-4365/aad237
英文摘要We present a detailed determination and analysis of 3D stellar mass distribution of the Galactic disk for mono-age populations using a sample of 0.93 million main-sequence turnoff and subgiant stars from the LAMOST Galactic Surveys. Our results show the following. (1) All stellar populations younger than 10 Gyr exhibit strong disk flaring, which is accompanied by a dumpy vertical density profile that is best described by a sechn function with index depending on both radius and age. (2) Asymmetries and wave-like oscillations are presented in both the radial and vertical direction, with strength varying with stellar populations. (3) As a contribution by the Local spiral arm, the midplane stellar mass density at solar radius but 400-800 pc (3 degrees-6 degrees) away from the Sun in the azimuthal direction has a value of 0.0594 +/- 0.0008M(circle dot) pc(-3), which is 0.0164M(circle dot) pc(-3) higher than previous estimates at the solar neighborhood. The result raises doubts on the current estimate of local dark matter density. (4) The radial distribution of surface mass density yields a disk scale length evolving from similar to 4 kpc for the young populations to similar to 2 kpc for the old populations. The overall population exhibits a disk scale length of 2.48 +/- 0.05 kpc and a total stellar mass of (3.6 +/- 0.1) x 10(10)M(circle dot) assuming R-circle dot = 8.0 kpc, and the value becomes (4.1 +/- 0.1) x 10(10) M-circle dot if R-circle dot = 8.3 kpc. (5) The disk has a peak star formation rate (SFR) changing from 6-8 Gyr ago at the inner part to 4-6 Gyr ago at the outer part, indicating an inside-out assemblage history. The 0-1 Gyr population yields a recent disk total SFR of 1.96 +/- 0.12M(circle dot) yr(-1).
WOS关键词MILKY-WAY-GALAXY ; EXPLORING HALO SUBSTRUCTURE ; SAGITTARIUS DWARF GALAXY ; DARK-MATTER EXPERIMENT ; ALL-SKY SURVEY ; THICK DISC ; 3-DIMENSIONAL DISTRIBUTION ; SPIRAL STRUCTURE ; TRIANGULUM-ANDROMEDA ; SPECTROSCOPIC SURVEY
资助项目National Natural Science Foundation of China[11703035] ; National Key Basic Research Program of China[2014CB845700] ; Joint Funds of the National Natural Science Foundation of China[U1531244] ; NSFC[11443006] ; NSFC[11603002] ; Beijing Normal University[310232102] ; Special Funding for Advanced Users ; National Astronomical Observatories, Chinese Academy of Sciences ; Alfred P. Sloan Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; University of Arizona ; Brazilian Participation Group ; Brookhaven National Laboratory ; Carnegie Mellon University ; University of Florida ; French Participation Group ; German Participation Group ; Harvard University ; Instituto de Astrofisica de Canarias ; Michigan State/Notre Dame/JINA Participation Group ; Johns Hopkins University ; Lawrence Berkeley National Laboratory ; Max Planck Institute for Astrophysics ; Max Planck Institute for Extraterrestrial Physics ; New Mexico State University ; New York University ; Ohio State University ; Pennsylvania State University ; University of Portsmouth ; Princeton University ; Spanish Participation Group ; University of Tokyo ; University of Utah ; Vanderbilt University ; University of Virginia ; University of Washington ; Yale University ; Robert Martin Ayers Sciences Fund
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000441325500001
出版者IOP PUBLISHING LTD
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; Joint Funds of the National Natural Science Foundation of China ; Joint Funds of the National Natural Science Foundation of China ; NSFC ; NSFC ; Beijing Normal University ; Beijing Normal University ; Special Funding for Advanced Users ; Special Funding for Advanced Users ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; 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 ; Robert Martin Ayers Sciences Fund ; Robert Martin Ayers Sciences Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; Joint Funds of the National Natural Science Foundation of China ; Joint Funds of the National Natural Science Foundation of China ; NSFC ; NSFC ; Beijing Normal University ; Beijing Normal University ; Special Funding for Advanced Users ; Special Funding for Advanced Users ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; 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 ; Robert Martin Ayers Sciences Fund ; Robert Martin Ayers Sciences Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; Joint Funds of the National Natural Science Foundation of China ; Joint Funds of the National Natural Science Foundation of China ; NSFC ; NSFC ; Beijing Normal University ; Beijing Normal University ; Special Funding for Advanced Users ; Special Funding for Advanced Users ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; 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 ; Robert Martin Ayers Sciences Fund ; Robert Martin Ayers Sciences Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; Joint Funds of the National Natural Science Foundation of China ; Joint Funds of the National Natural Science Foundation of China ; NSFC ; NSFC ; Beijing Normal University ; Beijing Normal University ; Special Funding for Advanced Users ; Special Funding for Advanced Users ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; 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 ; Robert Martin Ayers Sciences Fund ; Robert Martin Ayers Sciences Fund
源URL[http://ir.bao.ac.cn/handle/114a11/22229]  
专题中国科学院国家天文台
通讯作者Xiang, Maosheng
作者单位1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Yunnan Univ, South Western Inst Astron Res, Kunming 650500, Yunnan, Peoples R China
5.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714		 Xiang, Maosheng,Shi, Jianrong,Liu, Xiaowei,et al. Stellar Mass Distribution and Star Formation History of the Galactic Disk Revealed by Mono-age Stellar Populations from LAMOST[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2018,237(2):30.
APA Xiang, Maosheng.,Shi, Jianrong.,Liu, Xiaowei.,Yuan, Haibo.,Chen, Bingqiu.,...&Zhang, Meng.(2018).Stellar Mass Distribution and Star Formation History of the Galactic Disk Revealed by Mono-age Stellar Populations from LAMOST.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,237(2),30.
MLA Xiang, Maosheng,et al."Stellar Mass Distribution and Star Formation History of the Galactic Disk Revealed by Mono-age Stellar Populations from LAMOST".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 237.2(2018):30.

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