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Phase II of the LAMOST-Kepler/K2 Survey. II. Time Domain of Medium-resolution Spectroscopic Observations from 2018 to 2023

文献类型：期刊论文

作者Qin, Mingfeng7,9; Fu, Jian-Ning7,8,9; Zong, Weikai7,9; De Cat, Peter6; Frasca, Antonio5; Cang, Tianqi7,9; Wang, Jiangtao4; Shi, Jianrong3; Luo, Ali3; Zhang, Haotong3
刊名ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期2025-09-01
卷号280期号:1页码:19
ISSN号0067-0049
DOI10.3847/1538-4365/adf1a9
产权排序3
英文摘要The LAMOST-Kepler/K2 Medium-Resolution Spectroscopic Survey (LK-MRS) conducted time-domain (TD) medium-resolution spectroscopic observations of 20 LAMOST plates in the Kepler and K2 fields from 2018 to 2023, a phase designated as LK-MRS-I. A catalog of stellar parameters for a total of 36,588 stars, derived from the spectra collected during these 5 yr, including the effective temperature, the surface gravity, the metallicity, the alpha-element abundance, the radial velocity (RV), and vsini of the target stars, is released, together with the weighted averages and uncertainties. At a signal-to-noise ratio = 10, the measurement uncertainties are 120 K, 0.18 dex, 0.13 dex, 0.08 dex, 1.9 km s-1, and 4.0 km s-1 for the above parameters, respectively. Comparisons with the parameters provided by the APOGEE and GALAH surveys validate the effective temperature and surface gravity measurements, showing minor discrepancies in metallicity and alpha-element abundance values. We identified some peculiar star candidates, including 764 metal-poor stars, 174 very metal-poor stars, and 30 high-velocity stars. Moreover, we found 2333 stars whose RV seems to be variable. Using Kepler/K2 or TESS photometric data, we confirmed 371 periodic variable stars among the RV variable candidates and classified their variability types. LK-MRS-I provides spectroscopic data that is useful for studies of the Kepler and K2 fields. The LK-MRS project will continue collecting TD medium-resolution spectra for target stars during the third phase of LAMOST surveys, providing data to support further scientific research.
WOS关键词HIGH-VELOCITY STARS ; LAMOST OBSERVATIONS ; APOKASC CATALOG ; CHEMICAL ABUNDANCES ; RADIAL-VELOCITIES ; ECLIPSING BINARY ; MESA ISOCHRONES ; DATABASE ; MODULES ; DWARF
资助项目MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12090040] ; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12090042] ; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12427804] ; National Natural Science Foundation of China (NSFC) ; China Manned Space Project[CMS-CSST-2025-A13] ; China Manned Space Program ; Tianchi Talent Introduction Plan[ZYYD2025QY27] ; Central Guidance for Local Science and Technology Development Fund ; Guoshoujing Telescope (LAMOST) ; National Major Scientific Project built by the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Development and Reform Commission ; Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001562991700001
出版者IOP Publishing Ltd
资助机构MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809 ; National Natural Science Foundation of China (NSFC) ; China Manned Space Project ; China Manned Space Program ; Tianchi Talent Introduction Plan ; Central Guidance for Local Science and Technology Development Fund ; Guoshoujing Telescope (LAMOST) ; National Major Scientific Project built by the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Development and Reform Commission ; Chinese Academy of Sciences
源URL[http://ir.xao.ac.cn/handle/45760611-7/8089]  
专题研究单元未命名
通讯作者Fu, Jian-Ning
作者单位1.Chongqing Univ Posts & Telecommun, Sch Sci, Chongqing 400065, Peoples R China
2.Univ Wroclaw, Astron Inst, Ul Kopernika 11, PL-51622 Wroclaw, Poland
3.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China
4.Chinese Acad Sci, CAS Key Lab Opt Astron, Natl Astron Observ, Beijing 100101, Peoples R China
5.INAF Osservatorio Astrofis Catania, Via S Sofia 78, I-95123 Catania, Italy
6.Royal Observ Belgium, Ringlaan 3, B-1180 Brussels, Belgium
7.Beijing Normal Univ, Sch Phys & Astron, Beijing 100875, Peoples R China
8.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
9.Beijing Normal Univ, Inst Frontiers Astron & Astrophys, Beijing 102206, Peoples R China
10.Appalachian State Univ, Dept Phys & Astron, Boone, NC 28608 USA
推荐引用方式
GB/T 7714		 Qin, Mingfeng,Fu, Jian-Ning,Zong, Weikai,et al. Phase II of the LAMOST-Kepler/K2 Survey. II. Time Domain of Medium-resolution Spectroscopic Observations from 2018 to 2023[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2025,280(1):19.
APA Qin, Mingfeng.,Fu, Jian-Ning.,Zong, Weikai.,De Cat, Peter.,Frasca, Antonio.,...&Wang, Jiaxin.(2025).Phase II of the LAMOST-Kepler/K2 Survey. II. Time Domain of Medium-resolution Spectroscopic Observations from 2018 to 2023.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,280(1),19.
MLA Qin, Mingfeng,et al."Phase II of the LAMOST-Kepler/K2 Survey. II. Time Domain of Medium-resolution Spectroscopic Observations from 2018 to 2023".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 280.1(2025):19.

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