Mapping the emission line strengths and kinematics of supernova remnant S147 with extensive LAMOST spectroscopic observations

作     者：Juan-Juan Ren Xiao-Wei Liu Bing-Qiu Chen Mao-Sheng Xiang Hai-Bo Yuan Yang Huang Hua-Wei Zhang Chun Wang Zhi-Jia Tian Gao-Chao Liu Hong Wu 

作者机构：Department of Astronomy Peking University Key Laboratory of Optical Astronomy National Astronomy Observatories Chinese Academy of Sciences Kavli Institute for Astronomy and Astrophysics Peking University South-Western Institute for Astronomy Research Yunnan University Department of Astronomy Beijing Normal University College of Science China Three Gorges University 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2018年第18卷第9期

页      面：63-78页

核心收录：

学科分类：07[理学] 08[工学] 080401[工学-精密仪器及机械] 070401[理学-天体物理] 0804[工学-仪器科学与技术] 0704[理学-天文学] 081102[工学-检测技术与自动化装置] 0811[工学-控制科学与工程] 

基　　金：supported by the Joint Funds of the National Natural Science Foundation of China (Grant No. U1531244) the National Key Basic Research Program of China (2014CB845700) support from the Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences supported by Special Funding for Advanced Users, budgeted and administrated by the Center for Astronomical MegaScience, Chinese Academy of Sciences (CAMS) National Major Scientific Project built by the Chinese Academy of Sciences Funding for the project has been provided by the National Development and Reform Commission National Astronomical Observatories, Chinese Academy of Sciences 

主　　题：ISM supernova remnants - ISM kinematics and dynamics - ISM general 

摘      要：We present extensive spectroscopic observations of supernova remnant （SNR） S 147 collected with the Large sky Area Multi-Object fiber Spectroscopic Telescope （LAMOST）. The spectra were care- fully sky-subtracted taking into account the complex filamentary structure of S 147. We have utilized all available LAMOST spectra toward S 147, including sky and stellar spectra. By measuring the prominent optical emission lines including Ha, [NII] ）λ 6584 and [S n] λλ6717, 6731, we present maps of radial velocity and line intensity ratio covering the whole nebula of S 147 with unprecedented detail. The maps spatially correlate well with the complex filamentary structure of S147. For the central 2° of S147, the radial velocity varies from - 100 to 100 krn s^-1 and has peaks between - 0 and 10 km s^-1. The intensity ratios of Hα/[S n）λλ6717,6731, [Sn] λ 6717/λ 6731 and Ha/IN Hα/λ 6584 peak at about 0.77, 1.35 and 1.48, respectively, with a scatter of 0.17, 0.19 and 0.37, respectively. The intensity ratios are consistent with the literature values. However, the range of variations of line intensity ratios estimated here, which are representative of the whole nebula, is larger than previously estimated.