标题：Automatic determination of stellar atmospheric parameters and construction of stellar spectral templates of the Guoshoujing Telescope (LAMOST)
作者：Wu, Yue; Luo, A-Li; Li, Hai-Ning; Shi, Jian-Rong; Prugniel, Philippe; Liang, Yan-Chun; Zhao, Yong-Heng; Zhang, Jian-Nan; Bai, Zhong-Ru 更多 作者机构：[Yue Wu] National Astronomical Observatories,Chinese Academy of Sciences, Key Laboratory of Optical Astronomy,NAOC,Chinese Academy of Sciences, Beijin 更多
通讯作者地址：[Wu, Y]Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China.
来源：RESEARCH IN ASTRONOMY AND ASTROPHYSICS
关键词：astronomical data bases: atlases; stars: fundamental parameters;; techniques: spectroscopic; surveys
摘要：A number of spectroscopic surveys have been carried out or are planned to study the origin of the Milky Way. Their exploitation requires reliable automated methods and softwares to measure the fundamental parameters of the stars. Adopting the ULySS package, we have tested the effect of different resolutions and signal-to-noise ratios (SNR) on the measurement of the stellar atmospheric parameters (effective temperature T-eff, surface gravity log g, and metallicity [Fe/H]). We show that ULySS is reliable for determining these parameters with medium-resolution spectra (R similar to 2000). Then, we applied the method to measure the parameters of 771 stars selected in the commissioning database of the Guoshoujing Telescope (LAMOST). The results were compared with the SDSS/SEGUE Stellar Parameter Pipeline (SSPP), and we derived precisions of 167K, 0.34 dex, and 0.16 dex for T-eff, log g and [Fe/H] respectively. Furthermore, 120 of these stars are selected to construct the primary stellar spectral template library (Version 1.0) of LAMOST, and will be deployed as basic ingredients for the LAMOST automated parametrization pipeline.