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LAMOST Time-Domain survey: first results of four K2 plates
Wang, Song1; Zhang, Hao-Tong1; Bai, Zhong-Rui1; Yuan, Hai-Long1; Xiang, Mao-Sheng2; Zhang, Bo3; Hou, Wen1; Zuo, Fang1; Du, Bing1; Li, Tan-Da3,4,5; Yang, Fan1,3,6; Cui, Kai-Ming1,6; Wang, Yi-Lun1,6; Li, Jiao1; Kovalev, Mikhail2,7; Li, Chun-Qian1; Tian, Hao1; Zong, Wei-Kai3; Han, Heng-Geng1,6; Liu, Chao6,8; Luo, A-Li1,6; Shi, Jian-Rong1,6; Fu, Jian-Ning3; Bi, Shao-Lan3; Han ZW(韩占文)7; Liu, Ji-Feng1,6,9
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2021-12
卷号21期号:11
DOI10.1088/1674-4527/21/11/292
产权排序第7完成单位
收录类别SCI
关键词astronomical database miscellaneous catalogs stars fundamental parameters binaries general binaries spectroscopic
摘要

From Oct. 2019 to Apr. 2020, LAMOST performed a time-domain (TD) spectroscopic survey of four K2 plates with both low- and medium-resolution observations. The low-resolution spectroscopic survey acquired 282 exposures ( approximate to 46.6 h) over 25 nights, yielding a total of about 767 000 spectra, and the medium-resolution survey took 177 exposures ( approximate to 49.1 h) over 27 nights, collecting about 478 000 spectra. More than 70%/50% of low-resolution/medium-resolution spectra have signal-to-noise ratio higher than 10. We determine stellar parameters (e.g., T (eff), log g, [Fe/H]) and radial velocity (RV) with different methods, including LASP, DD-Payne and SLAM. In general, these parameter estimations from different methods show good agreement, and the stellar parameter values are consistent with those of APOGEE. We use the Gaia DR2 RV values to calculate a median RV zero point (RVZP) for each spectrograph exposure by exposure, and the RVZP-corrected RVs agree well with the APOGEE data. The stellar evolutionary and spectroscopic masses are estimated based on the stellar parameters, multi-band magnitudes, distances and extinction values. Finally, we construct a binary catalog including about 2700 candidates by analyzing their light curves, fitting the RV data, calculating the binarity parameters from medium-resolution spectra and cross-matching the spatially resolved binary catalog from Gaia EDR3. The LAMOST TD survey is expected to represent a breakthrough in various scientific topics, such as binary systems, stellar activity, stellar pulsation, etc.

资助项目National Development and Reform Commission ; Alfred P. Sloan FoundationAlfred P. Sloan Foundation ; U.S. Department of Energy Office of ScienceUnited States Department of Energy (DOE) ; Center for High-Performance Computing at the University of Utah ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11988101] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11933004] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[12003050] ; National Key Research and Development Program of China[2019YFA0405000] ; National Key Research and Development Program of China[2019YFA0405504] ; National Key Research and Development Program of China[2016YFA0400804] ; B-type Strategic Priority Program of the Chinese Academy of Sciences (CAS)[XDB41000000] ; Youth Innovation Promotion Association of CAS[2019057] ; Youth Innovation Promotion Association of CAS[2020060] ; European Research Council (ERC) under the European Union Horizon 2020 research and innovation programmeEuropean Research Council (ERC)[804752]
项目资助者National Development and Reform Commission ; Alfred P. Sloan FoundationAlfred P. Sloan Foundation ; U.S. Department of Energy Office of ScienceUnited States Department of Energy (DOE) ; Center for High-Performance Computing at the University of Utah ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11988101, 11933004, 12003050] ; National Key Research and Development Program of China[2019YFA0405000, 2019YFA0405504, 2016YFA0400804] ; B-type Strategic Priority Program of the Chinese Academy of Sciences (CAS)[XDB41000000] ; Youth Innovation Promotion Association of CAS[2019057, 2020060] ; European Research Council (ERC) under the European Union Horizon 2020 research and innovation programmeEuropean Research Council (ERC)[804752]
语种英语
学科领域天文学 ; 恒星与银河系 ; 恒星天文学
学科门类理学 ; 理学::天文学
文章类型Article
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
出版地20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
ISSN1674-4527
URL查看原文
WOS记录号WOS:000735639800001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]VARIABLE-STARS ; BINARIES ; CATALOG ; TABLES
引用统计
被引频次:19[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.ynao.ac.cn/handle/114a53/24756
专题大样本恒星演化研究组
通讯作者Wang, Song
作者单位1.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China;
2.Max-Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany;
3.Department of Astronomy, Beijing Normal University, Beijing 100875, China;
4.School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK;
5.Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark;
6.College of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
7.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650216, China;
8.Key Lab of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China;
9.WHU-NAOC Joint Center for Astronomy, Wuhan University, Wuhan 430072, China
推荐引用方式
GB/T 7714
Wang, Song,Zhang, Hao-Tong,Bai, Zhong-Rui,et al. LAMOST Time-Domain survey: first results of four K2 plates[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(11).
APA Wang, Song.,Zhang, Hao-Tong.,Bai, Zhong-Rui.,Yuan, Hai-Long.,Xiang, Mao-Sheng.,...&Liu, Ji-Feng.(2021).LAMOST Time-Domain survey: first results of four K2 plates.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(11).
MLA Wang, Song,et al."LAMOST Time-Domain survey: first results of four K2 plates".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.11(2021).
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