galactichaloageestimatedfromlamostdr4andgaiadr1
文献类型：期刊论文
| 作者 | JinCheng Guo5; HuaWei Zhang5; Yang Huang5; XiaoWei Liu2; JiFeng Liu3 ; MaoSheng Xiang3; BingQiu Chen2; HaiBo Yuan1; ZhiJia Tian5; ZhiYing Huo3
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| 刊名 | 天文和天体物理学研究英文版
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| 出版日期 | 2019 |
| 卷号 | 000期号:001页码:87 |
| ISSN号 | 1674-4527 |
| 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±1.4 Gyr, 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. |
| 资助项目 | [National Natural Science Foundation of China] ; [National Key Basic Research Program of China] ; [China Postdoctoral Science Foundation] ; [Center for Astronomical Mega-Science, Chinese Academy of Sciences] ; [National Development and Reform Commission] |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/42880]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.北京师范大学 2.云南大学 3.中国科学院国家天文台 4.北京大学 5.Department of Astronomy, Peking University,jincheng.guo@pku.edu.cn,zhanghw@pku.edu.cn |
| 推荐引用方式 GB/T 7714 | JinCheng Guo,HuaWei Zhang,Yang Huang,et al. galactichaloageestimatedfromlamostdr4andgaiadr1[J]. 天文和天体物理学研究英文版,2019,000(001):87. |
| APA | JinCheng Guo.,HuaWei Zhang.,Yang Huang.,XiaoWei Liu.,JiFeng Liu.,...&Chun Wang.(2019).galactichaloageestimatedfromlamostdr4andgaiadr1.天文和天体物理学研究英文版,000(001),87. |
| MLA | JinCheng Guo,et al."galactichaloageestimatedfromlamostdr4andgaiadr1".天文和天体物理学研究英文版 000.001(2019):87. |
入库方式： OAI收割
来源：国家天文台
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