Disk stars in the Milky Way detected beyond 25 kpc from its center
文献类型：期刊论文
| 作者 | Lopez-Corredoira, M.1,2; Allende Prieto, C.1,2; Garzon, F.1,2; Wang, H.3,4; Liu, C.3,4; Deng, L.3,4 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2018-05-07 |
| 卷号 | 612页码:4 |
| 关键词 | Galaxy: structure Galaxy: disk Galaxy: abundances |
| ISSN号 | 1432-0746 |
| DOI | 10.1051/0004-6361/201832880 |
| 英文摘要 | Context. The maximum size of the Galactic stellar disk is not yet known. Some studies have suggested an abrupt drop-off of the stellar density of the disk at Galactocentric distances R greater than or similar to 15 kpc, which means that in practice no disk stars or only very few of them should be found beyond this limit. However, stars in the Milky Way plane are detected at larger distances. In addition to the halo component, star counts have placed the end of the disk beyond 20 kpc, although this has not been spectroscopically confirmed so far. Aims. Here, we aim to spectroscopically confirm the presence of the disk stars up to much larger distances. Methods. With data from the LAMOST and SDSS-APOGEE spectroscopic surveys, we statistically derived the maximum distance at which the metallicity distribution of stars in the Galactic plane is distinct from that of the halo populations. Results. Our analysis reveals the presence of disk stars at R > 26 kpc (99.7% C.L.) and even at R > 31 kpc (95.4% C.L.). |
| WOS关键词 | MAJOR OVER-DENSITY ; GALACTIC DISKS ; GALAXY ; WARP ; MAGNITUDES ; CUTOFF ; COUNTS ; MODELS ; EDGE |
| 资助项目 | Spanish Ministry of Economy and Competitiveness (MINECO)[AYA2015-66506-P] ; National Development and Reform Commission ; Alfred P. Sloan Foundation ; US Department of Energy Office of Science ; Center for High-Performance Computing at the University of Utah ; Carnegie Institution for Science, Carnegie Mellon University ; Harvard-Smithsonian Center for Astrophysics ; Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Lawrence Berkeley National Laboratory ; Leibniz Institut fur Astrophysik Potsdam (AIP) ; Max-Planck-Institut fur Astronomie (MPIA Heidelberg) ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; National Astronomical Observatories of China ; New Mexico State University ; New York University ; University of Notre Dame ; Observatario Nacional/MCTI ; Ohio State University ; Pennsylvania State University ; Shanghai Astronomical Observatory ; Universidad Nacional Autonoma de Mexico ; University of Arizona ; University of Colorado Boulder ; University of Oxford ; University of Portsmouth ; University of Utah ; University of Virginia ; University of Washington ; University of Wisconsin ; Vanderbilt University ; Yale University ; Instituto de Astrofisica de Canarias ; Johns Hopkins University ; Chilean Participation Group ; French Participation Group ; United Kingdom Participation Group ; Brazilian Participation Group |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000431714000002 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; National Development and Reform Commission ; National Development and Reform Commission ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; Center for High-Performance Computing at the University of Utah ; Center for High-Performance Computing at the University of Utah ; Carnegie Institution for Science, Carnegie Mellon University ; Carnegie Institution for Science, Carnegie Mellon University ; Harvard-Smithsonian Center for Astrophysics ; Harvard-Smithsonian Center for Astrophysics ; Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Lawrence Berkeley National Laboratory ; Lawrence Berkeley National Laboratory ; Leibniz Institut fur Astrophysik Potsdam (AIP) ; Leibniz Institut fur Astrophysik Potsdam (AIP) ; Max-Planck-Institut fur Astronomie (MPIA Heidelberg) ; Max-Planck-Institut fur Astronomie (MPIA Heidelberg) ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; New Mexico State University ; New Mexico State University ; New York University ; New York University ; University of Notre Dame ; University of Notre Dame ; Observatario Nacional/MCTI ; Observatario Nacional/MCTI ; Ohio State University ; Ohio State University ; Pennsylvania State University ; Pennsylvania State University ; Shanghai Astronomical Observatory ; Shanghai Astronomical Observatory ; Universidad Nacional Autonoma de Mexico ; Universidad Nacional Autonoma de Mexico ; University of Arizona ; University of Arizona ; University of Colorado Boulder ; University of Colorado Boulder ; University of Oxford ; University of Oxford ; University of Portsmouth ; University of Portsmouth ; University of Utah ; University of Utah ; University of Virginia ; University of Virginia ; University of Washington ; University of Washington ; University of Wisconsin ; University of Wisconsin ; Vanderbilt University ; Vanderbilt University ; Yale University ; Yale University ; Instituto de Astrofisica de Canarias ; Instituto de Astrofisica de Canarias ; Johns Hopkins University ; Johns Hopkins University ; Chilean Participation Group ; Chilean Participation Group ; French Participation Group ; French Participation Group ; United Kingdom Participation Group ; United Kingdom Participation Group ; Brazilian Participation Group ; Brazilian Participation Group ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; National Development and Reform Commission ; National Development and Reform Commission ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; Center for High-Performance Computing at the University of Utah ; Center for High-Performance Computing at the University of Utah ; Carnegie Institution for Science, Carnegie Mellon University ; Carnegie Institution for Science, Carnegie Mellon University ; Harvard-Smithsonian Center for Astrophysics ; Harvard-Smithsonian Center for Astrophysics ; Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Lawrence Berkeley National Laboratory ; Lawrence Berkeley National Laboratory ; Leibniz Institut fur Astrophysik Potsdam (AIP) ; Leibniz Institut fur Astrophysik Potsdam (AIP) ; Max-Planck-Institut fur Astronomie (MPIA Heidelberg) ; Max-Planck-Institut fur Astronomie (MPIA Heidelberg) ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; New Mexico State University ; New Mexico State University ; New York University ; New York University ; University of Notre Dame ; University of Notre Dame ; Observatario Nacional/MCTI ; Observatario Nacional/MCTI ; Ohio State University ; Ohio State University ; Pennsylvania State University ; Pennsylvania State University ; Shanghai Astronomical Observatory ; Shanghai Astronomical Observatory ; Universidad Nacional Autonoma de Mexico ; Universidad Nacional Autonoma de Mexico ; University of Arizona ; University of Arizona ; University of Colorado Boulder ; University of Colorado Boulder ; University of Oxford ; University of Oxford ; University of Portsmouth ; University of Portsmouth ; University of Utah ; University of Utah ; University of Virginia ; University of Virginia ; University of Washington ; University of Washington ; University of Wisconsin ; University of Wisconsin ; Vanderbilt University ; Vanderbilt University ; Yale University ; Yale University ; Instituto de Astrofisica de Canarias ; Instituto de Astrofisica de Canarias ; Johns Hopkins University ; Johns Hopkins University ; Chilean Participation Group ; Chilean Participation Group ; French Participation Group ; French Participation Group ; United Kingdom Participation Group ; United Kingdom Participation Group ; Brazilian Participation Group ; Brazilian Participation Group ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; National Development and Reform Commission ; National Development and Reform Commission ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; Center for High-Performance Computing at the University of Utah ; Center for High-Performance Computing at the University of Utah ; Carnegie Institution for Science, Carnegie Mellon University ; Carnegie Institution for Science, Carnegie Mellon University ; Harvard-Smithsonian Center for Astrophysics ; Harvard-Smithsonian Center for Astrophysics ; Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Lawrence Berkeley National Laboratory ; Lawrence Berkeley National Laboratory ; Leibniz Institut fur Astrophysik Potsdam (AIP) ; Leibniz Institut fur Astrophysik Potsdam (AIP) ; Max-Planck-Institut fur Astronomie (MPIA Heidelberg) ; Max-Planck-Institut fur Astronomie (MPIA Heidelberg) ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; New Mexico State University ; New Mexico State University ; New York University ; New York University ; University of Notre Dame ; University of Notre Dame ; Observatario Nacional/MCTI ; Observatario Nacional/MCTI ; Ohio State University ; Ohio State University ; Pennsylvania State University ; Pennsylvania State University ; Shanghai Astronomical Observatory ; Shanghai Astronomical Observatory ; Universidad Nacional Autonoma de Mexico ; Universidad Nacional Autonoma de Mexico ; University of Arizona ; University of Arizona ; University of Colorado Boulder ; University of Colorado Boulder ; University of Oxford ; University of Oxford ; University of Portsmouth ; University of Portsmouth ; University of Utah ; University of Utah ; University of Virginia ; University of Virginia ; University of Washington ; University of Washington ; University of Wisconsin ; University of Wisconsin ; Vanderbilt University ; Vanderbilt University ; Yale University ; Yale University ; Instituto de Astrofisica de Canarias ; Instituto de Astrofisica de Canarias ; Johns Hopkins University ; Johns Hopkins University ; Chilean Participation Group ; Chilean Participation Group ; French Participation Group ; French Participation Group ; United Kingdom Participation Group ; United Kingdom Participation Group ; Brazilian Participation Group ; Brazilian Participation Group ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; National Development and Reform Commission ; National Development and Reform Commission ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; Center for High-Performance Computing at the University of Utah ; Center for High-Performance Computing at the University of Utah ; Carnegie Institution for Science, Carnegie Mellon University ; Carnegie Institution for Science, Carnegie Mellon University ; Harvard-Smithsonian Center for Astrophysics ; Harvard-Smithsonian Center for Astrophysics ; Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Lawrence Berkeley National Laboratory ; Lawrence Berkeley National Laboratory ; Leibniz Institut fur Astrophysik Potsdam (AIP) ; Leibniz Institut fur Astrophysik Potsdam (AIP) ; Max-Planck-Institut fur Astronomie (MPIA Heidelberg) ; Max-Planck-Institut fur Astronomie (MPIA Heidelberg) ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; New Mexico State University ; New Mexico State University ; New York University ; New York University ; University of Notre Dame ; University of Notre Dame ; Observatario Nacional/MCTI ; Observatario Nacional/MCTI ; Ohio State University ; Ohio State University ; Pennsylvania State University ; Pennsylvania State University ; Shanghai Astronomical Observatory ; Shanghai Astronomical Observatory ; Universidad Nacional Autonoma de Mexico ; Universidad Nacional Autonoma de Mexico ; University of Arizona ; University of Arizona ; University of Colorado Boulder ; University of Colorado Boulder ; University of Oxford ; University of Oxford ; University of Portsmouth ; University of Portsmouth ; University of Utah ; University of Utah ; University of Virginia ; University of Virginia ; University of Washington ; University of Washington ; University of Wisconsin ; University of Wisconsin ; Vanderbilt University ; Vanderbilt University ; Yale University ; Yale University ; Instituto de Astrofisica de Canarias ; Instituto de Astrofisica de Canarias ; Johns Hopkins University ; Johns Hopkins University ; Chilean Participation Group ; Chilean Participation Group ; French Participation Group ; French Participation Group ; United Kingdom Participation Group ; United Kingdom Participation Group ; Brazilian Participation Group ; Brazilian Participation Group |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/21239]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Lopez-Corredoira, M. |
| 作者单位 | 1.Inst Astrofis Canarias, Tenerife 38205, Spain 2.Univ La Laguna, Dept Astrofis, Tenerife 38206, Spain 3.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lopez-Corredoira, M.,Allende Prieto, C.,Garzon, F.,et al. Disk stars in the Milky Way detected beyond 25 kpc from its center[J]. ASTRONOMY & ASTROPHYSICS,2018,612:4. |
| APA | Lopez-Corredoira, M.,Allende Prieto, C.,Garzon, F.,Wang, H.,Liu, C.,&Deng, L..(2018).Disk stars in the Milky Way detected beyond 25 kpc from its center.ASTRONOMY & ASTROPHYSICS,612,4. |
| MLA | Lopez-Corredoira, M.,et al."Disk stars in the Milky Way detected beyond 25 kpc from its center".ASTRONOMY & ASTROPHYSICS 612(2018):4. |
入库方式： OAI收割
来源：国家天文台
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