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Galactic halo age estimated from LAMOST DR4 and Gaia DR1

文献类型：期刊论文

作者Guo, Jin-Cheng1,2,3; Zhang, Hua-Wei1,2; Huang, Yang1,2,4; Liu, Xiao-Wei1,2,4; Liu, Ji-Feng3; Xian, Mao-Sheng3; Chen, Bing-Qiu4; Yuan, Hai-Bo5; Tian, Zhi-Jia1,2; Huo, Zhi-Ying3
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2019
卷号19期号:1页码:8
关键词galaxies: halos Galaxy: evolution stars: kinematics and dynamics
ISSN号1674-4527
DOI10.1088/1674-4527/19/1/8
英文摘要The stellar halo is one of the major components in the Milky Way. Research on its age can provide critical constraints on the origin of the stellar halo and further on the formation of our Galaxy. So far, different approaches and samples have been used to estimate the age of the Galactic halo. In our previous paper. we carefully selected 63 field halo turn-off stars within 1 kpc from the literature using a kinematic approach, then estimated the age of the halo. In this following work, we not only update the data from LAMOST DR4 and Gaia DR1, but also try a different method to select a clean halo sample by combining the metallicity and orbital parameters. Then we compare this halo turn-off sample with the GARSTEC model in the B - V vs. metallicity plane. After Monte Carlo simulations are performed, the age is estimated to be 10.5 +/- 1.4Gyr, highly consistent with our previous result and other studies. However. due to the limited common sources between LAMOST DR4 and Gaia DR1, the final sample in this paper is still quite small. The estimated age will be more robust with the much larger Gaia DR2.
WOS关键词GLOBULAR-CLUSTERS ; STELLAR ; STARS ; SKY
资助项目National Natural Science Foundation of China[11473001] ; National Natural Science Foundation of China[11078006] ; National Key Basic Research Program of China[2014CB845700] ; China Postdoctoral Science Foundation[2017M610695] ; Center for Astronomical Mega-Science, Chinese Academy of Sciences ; National Development and Reform Commission
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000456345900008
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
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 ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Center for Astronomical Mega-Science, Chinese Academy of Sciences ; Center for Astronomical Mega-Science, Chinese Academy of Sciences ; National Development and Reform Commission ; National Development and Reform Commission ; 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 ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Center for Astronomical Mega-Science, Chinese Academy of Sciences ; Center for Astronomical Mega-Science, Chinese Academy of Sciences ; National Development and Reform Commission ; National Development and Reform Commission ; 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 ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Center for Astronomical Mega-Science, Chinese Academy of Sciences ; Center for Astronomical Mega-Science, Chinese Academy of Sciences ; National Development and Reform Commission ; National Development and Reform Commission ; 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 ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Center for Astronomical Mega-Science, Chinese Academy of Sciences ; Center for Astronomical Mega-Science, Chinese Academy of Sciences ; National Development and Reform Commission ; National Development and Reform Commission
源URL[http://ir.bao.ac.cn/handle/114a11/24742]  
专题中国科学院国家天文台
通讯作者Guo, Jin-Cheng
作者单位1.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
2.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100101, Peoples R China
4.Yunnan Univ, South Western Inst Astron Res, Kunming 650500, Yunnan, Peoples R China
5.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Jin-Cheng,Zhang, Hua-Wei,Huang, Yang,et al. Galactic halo age estimated from LAMOST DR4 and Gaia DR1[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(1):8.
APA Guo, Jin-Cheng.,Zhang, Hua-Wei.,Huang, Yang.,Liu, Xiao-Wei.,Liu, Ji-Feng.,...&Wang, Chun.(2019).Galactic halo age estimated from LAMOST DR4 and Gaia DR1.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(1),8.
MLA Guo, Jin-Cheng,et al."Galactic halo age estimated from LAMOST DR4 and Gaia DR1".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.1(2019):8.

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