NAOC Open IR
Searching for r-process-enhanced stars in the LAMOST survey I: the method
Chen, Tian-Yi1,2; Shi, Jian-Rong1,2; Beers, Timothy C.3,4; Yan, Hong-Liang1,2; Gao, Qi1,2; Li, Chun-Qian1,2; Li, Hai-Ning1; Zhao, Gang1,2
2021-03-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume21Issue:2Pages:8
AbstractThe abundance patterns of r-process-enhanced stars contain key information required to constrain the astrophysical site(s) of r-process nucleosynthesis, and to deepen our understanding of the chemical evolution of our Galaxy. To expand the sample of known r-process-enhanced stars, we have developed a method to search for candidates in the LAMOST medium-resolution (R similar to 7500) spectroscopic survey by matching the observed spectra to synthetic templates around the Eu ii line at 6645.1 angstrom. We obtain a sample of 13 metal-poor (-2.35 < [Fe/H] < -0.91) candidates from 12 209 unique stars with 32 774 mediumresolution spectra. These candidates will be further studied by high-resolution follow-up observations in the near future. We describe some extensions of this effort to include larger samples of stars, in particular at lower metallicity, using the strength of the Ba ii line at 6496.9 angstrom.
Keywordstars abundances stars chemically peculiar stars statistics
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Development and Reform Commission ; National Development and Reform Commission ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Development and Reform Commission ; National Development and Reform Commission ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Development and Reform Commission ; National Development and Reform Commission ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Development and Reform Commission ; National Development and Reform Commission
DOI10.1088/1674-4527/21/2/36
Language英语
Funding ProjectNational Key R&D Program of China[2019YFA0405502] ; Key Research Program of the Chinese Academy of Sciences[XDPB09-02] ; National Natural Science Foundation of China[11833006] ; National Natural Science Foundation of China[11473033] ; National Natural Science Foundation of China[11603037] ; National Natural Science Foundation of China[11973049] ; National Natural Science Foundation of China[11973052] ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences[114A32KYSB20160049] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB34020205] ; Astronomical Big Data Joint Research Center ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation[PHY 14-30152] ; Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Development and Reform Commission
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Development and Reform Commission ; National Development and Reform Commission ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Development and Reform Commission ; National Development and Reform Commission ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Development and Reform Commission ; National Development and Reform Commission ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; international partnership program's key foreign cooperation project, Bureau of International Cooperation, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Physics Frontier Center/JINA Center for the Evolution of the Element (JINA-CEE) - US National Science Foundation ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Development and Reform Commission ; National Development and Reform Commission
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000631495700001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/78889
Collection中国科学院国家天文台
Corresponding AuthorShi, Jian-Rong
Affiliation1.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab Opt Astron, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA
4.Univ Notre Dame, JINA Ctr Evolut Elements, Notre Dame, IN 46556 USA
Recommended Citation
GB/T 7714
Chen, Tian-Yi,Shi, Jian-Rong,Beers, Timothy C.,et al. Searching for r-process-enhanced stars in the LAMOST survey I: the method[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(2):8.
APA Chen, Tian-Yi.,Shi, Jian-Rong.,Beers, Timothy C..,Yan, Hong-Liang.,Gao, Qi.,...&Zhao, Gang.(2021).Searching for r-process-enhanced stars in the LAMOST survey I: the method.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(2),8.
MLA Chen, Tian-Yi,et al."Searching for r-process-enhanced stars in the LAMOST survey I: the method".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.2(2021):8.
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