Chemodynamical properties of the Anticentre Stream: a surviving disc fossil from a past satellite interaction
文献类型：期刊论文
| 作者 | Laporte, Chervin F. P.1; Belokurov, Vasily2; Koposov, Sergey E.2,3; Smith, Martin C.4; Hill, Vanessa5 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2020-02-01 |
| 卷号 | 492期号:1页码:L61-L65 |
| 关键词 | Galaxy: abundances Galaxy: disc Galaxy: evolution Galaxy: kinematics and dynamics Galaxy: structure |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnrasl/slz167 |
| 英文摘要 | Using Gaia second data release (DR2), we trace the Anticentre Stream (ACS) in various stellar populations across the sky and find that it is kinematically and spatially decoupled from the Monoceros Ring. Using stars from LAMOST and SEGUE, we show that the ACS is systematically more metal-poor than Monoceros by 0.1 dex with indications of a narrower metallicity spread. Furthermore, the ACS is predominantly populated of old stars (similar to 10 Gyr), whereas Monoceros has a pronounced tail of younger stars (6 - 10 Gyr) as revealed by their cumulative age distributions. Put together, all of this evidence support predictions from simulations of the interaction of the Sagittarius dwarf with the Milky Way, which argue, that the ACS is the remains of a tidal tail of the Galaxy excited during Sgr's first pericentric passage after it crossed the virial radius, whereas Monoceros consists of the composite stellar populations excited during the more extended phases of the interaction. Importantly, the ACS can be viewed as a stand-alone fossil of the chemical enrichment history of the Galactic disc. |
| WOS关键词 | CHEMICAL EVOLUTION ; MILKY-WAY ; STARS ; HALO ; SAGITTARIUS ; GALAXY ; CLOUD |
| 资助项目 | Science and Technology Facilities Council (STFC) ; European Research Council (ERC) ; KITP ; Heising-Simons Foundation ; National Science Foundation[NSF PHY-1748958] ; NSF[AST-1813881] ; Heising-Simons Foundation grant[2018-1030] ; National Key Basic Research andDevelopment Program of China[2018YFA0404501] ; andNational Science Foundation of China (NSFC)[11673083] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000525753900012 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | Science and Technology Facilities Council (STFC) ; Science and Technology Facilities Council (STFC) ; European Research Council (ERC) ; European Research Council (ERC) ; KITP ; KITP ; Heising-Simons Foundation ; Heising-Simons Foundation ; National Science Foundation ; National Science Foundation ; NSF ; NSF ; Heising-Simons Foundation grant ; Heising-Simons Foundation grant ; National Key Basic Research andDevelopment Program of China ; National Key Basic Research andDevelopment Program of China ; andNational Science Foundation of China (NSFC) ; andNational Science Foundation of China (NSFC) ; Science and Technology Facilities Council (STFC) ; Science and Technology Facilities Council (STFC) ; European Research Council (ERC) ; European Research Council (ERC) ; KITP ; KITP ; Heising-Simons Foundation ; Heising-Simons Foundation ; National Science Foundation ; National Science Foundation ; NSF ; NSF ; Heising-Simons Foundation grant ; Heising-Simons Foundation grant ; National Key Basic Research andDevelopment Program of China ; National Key Basic Research andDevelopment Program of China ; andNational Science Foundation of China (NSFC) ; andNational Science Foundation of China (NSFC) ; Science and Technology Facilities Council (STFC) ; Science and Technology Facilities Council (STFC) ; European Research Council (ERC) ; European Research Council (ERC) ; KITP ; KITP ; Heising-Simons Foundation ; Heising-Simons Foundation ; National Science Foundation ; National Science Foundation ; NSF ; NSF ; Heising-Simons Foundation grant ; Heising-Simons Foundation grant ; National Key Basic Research andDevelopment Program of China ; National Key Basic Research andDevelopment Program of China ; andNational Science Foundation of China (NSFC) ; andNational Science Foundation of China (NSFC) ; Science and Technology Facilities Council (STFC) ; Science and Technology Facilities Council (STFC) ; European Research Council (ERC) ; European Research Council (ERC) ; KITP ; KITP ; Heising-Simons Foundation ; Heising-Simons Foundation ; National Science Foundation ; National Science Foundation ; NSF ; NSF ; Heising-Simons Foundation grant ; Heising-Simons Foundation grant ; National Key Basic Research andDevelopment Program of China ; National Key Basic Research andDevelopment Program of China ; andNational Science Foundation of China (NSFC) ; andNational Science Foundation of China (NSFC) |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/55963]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Laporte, Chervin F. P. |
| 作者单位 | 1.Univ Victoria, Dept Phys & Astron, 3800 Finnerty Rd, Victoria, BC V8P 5C2, Canada 2.Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England 3.Carnegie Mellon Univ, McWilliams Ctr Cosmol, 5000 Forbes Ave, Pittsburgh, PA 15213 USA 4.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China 5.Univ Cote dAzur, Lab Lagrange, Observ Cate dAzur, Blvd Observ,CS 34229, F-06304 Nice, France |
| 推荐引用方式 GB/T 7714 | Laporte, Chervin F. P.,Belokurov, Vasily,Koposov, Sergey E.,et al. Chemodynamical properties of the Anticentre Stream: a surviving disc fossil from a past satellite interaction[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,492(1):L61-L65. |
| APA | Laporte, Chervin F. P.,Belokurov, Vasily,Koposov, Sergey E.,Smith, Martin C.,&Hill, Vanessa.(2020).Chemodynamical properties of the Anticentre Stream: a surviving disc fossil from a past satellite interaction.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,492(1),L61-L65. |
| MLA | Laporte, Chervin F. P.,et al."Chemodynamical properties of the Anticentre Stream: a surviving disc fossil from a past satellite interaction".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 492.1(2020):L61-L65. |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。