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Characterizing the Instrumental Profile of LAMOST

文献类型：期刊论文

作者Liu, Qian1,3; Bai, Zhongrui3; Zhou, Ming6; Yang MK(杨明宽)1,2,3,5; Yang, Xiaozhen1,3; Jiang, Ziyue1,3; Yuan, Hailong3; Li, Ganyu1,3; He, Yuji3,4; Wang, Mengxin3
刊名ASTRONOMICAL JOURNAL
出版日期2026-04-01
卷号171期号:4
ISSN号0004-6256
DOI10.3847/1538-3881/ae4ebe
产权排序第4完成单位
文献子类Article
英文摘要The instrumental profile (IP) of a telescope is of great significance for spectroscopic analyses, especially for wavelength calibration and stellar parameter measurements. The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) employs arc lamps for wavelength calibration. These lamps produce sharp emission lines with known wavelengths, and the observed arc lamp spectra can well characterize the IP. However, IPs are influenced by multiple factors, making them difficult to model accurately with traditional methods. Neural networks, which can automatically capture complex patterns and nonlinear features in data, provide a promising approach for high-precision IP measurement. We therefore construct a multilayer perceptron based on The Payne neural network to derive IPs for LAMOST. After training, the model can retrieve the IP for any fiber, at any wavelength, and at any time. We then apply the derived IP to stellar radial velocity (RV) measurements and analyze the impact of different IP center localization methods on the results. Finally, the dispersion of the measured RVs is reduced by approximately 3 km s-1. This improvement will facilitate the search for long-period binary stars via RV variations.
学科主题物理学 ; 光学 ; 天文学 ; 天文学其他学科 ; 机械工程 ; 仪器仪表技术 ; 光学技术与仪器 ; 天文仪器
URL标识查看原文
出版地No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND
WOS关键词LINE-SPREAD FUNCTION ; PRECISION ; TELESCOPE ; COMB
资助项目Youth Innovation Promotion Association of the Chinese Academy of Sciences (CAS YIPA)[20200060]; MOST divided by National Natural Science Foundation of China (NSFC)[12273056]; MOST divided by National Natural Science Foundation of China (NSFC)[12090041]; MOST divided by National Natural Science Foundation of China (NSFC)[11873066]; Strategic Priority Program of the Chinese Academy of Sciences[XDB1160302]; MOST divided by National Key Research and Development Program of China (NKPs)[2022YFA1603002]; MOST divided by National Key Research and Development Program of China (NKPs)[2023YFA1607901]; National Natural Science Foundation for Young Scientists of China[12503091]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001728975400001
出版者IOP Publishing Ltd
资助机构Youth Innovation Promotion Association of the Chinese Academy of Sciences (CAS YIPA)[20200060] ; MOST divided by National Natural Science Foundation of China (NSFC)[12273056, 12090041, 11873066] ; Strategic Priority Program of the Chinese Academy of Sciences[XDB1160302] ; MOST divided by National Key Research and Development Program of China (NKPs)[2022YFA1603002, 2023YFA1607901] ; National Natural Science Foundation for Young Scientists of China[12503091]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/29078]  
专题云南天文台_大样本恒星演化研究组
通讯作者Bai, Zhongrui; Zhang, Haotong
作者单位1.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China;
2.International Centre of Supernovae (ICESUN), Yunnan Key Laboratory of Supernova Research, Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China;
3.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China; zrbai@bao.ac.cn, htzhang@bao.ac.cn;
4.Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, 14482 Potsdam, Germany
5.Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China;
6.College of Photonics and Optical Engineering, Aerospace Information Technology University, Jinan 250299, People’s Republic of China;
推荐引用方式
GB/T 7714		 Liu, Qian,Bai, Zhongrui,Zhou, Ming,et al. Characterizing the Instrumental Profile of LAMOST[J]. ASTRONOMICAL JOURNAL,2026,171(4).
APA Liu, Qian.,Bai, Zhongrui.,Zhou, Ming.,杨明宽.,Yang, Xiaozhen.,...&Zhang, Haotong.(2026).Characterizing the Instrumental Profile of LAMOST.ASTRONOMICAL JOURNAL,171(4).
MLA Liu, Qian,et al."Characterizing the Instrumental Profile of LAMOST".ASTRONOMICAL JOURNAL 171.4(2026).

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来源：云南天文台

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