项目名称: 用LAMOST的巡天数据搜索和研究激变变星
项目编号: No.11473019
项目类型: 面上项目
立项/批准年度: 2015
项目学科: 天文学、地球科学
项目作者: 姜斌
作者单位: 山东大学
项目金额: 80万元
中文摘要: 激变变星是一类特殊而且稀少的天体,对于研究恒星和密近双星的演化,检验和发展吸积盘理论具有重要的意义。目前已经证认的有光谱的激变变星数量极少,针对激变变星的研究受到很大约束。国家大科学工程郭守敬望远镜(LAMOST)的科学巡天已经产生了海量的光谱数据,为发现更多的激变变星提供了数据源,也为进一步研究激变变星提供了条件。本课题的主要工作包括:1.研究一套适合在LAMOST海量光谱中准确、快速搜索激变变星的方法;2.通过交叉,使用SDSS的测光数据,研究激变变星的测光模型;3.在海量的SDSS测光数据中筛选激变变星的候选体,通过LAMOST来进行观测、证认,并改进测光模型;4.对该类天体进行系统的参数测量;5.使用山东大学1m望远镜跟踪观测,对激变变星的轨道周期空缺、超驼峰等特殊现象进行研究。
中文关键词: 郭守敬望远镜;激变变星;海量数据处理;数据挖掘;特征提取
英文摘要: Cataclysmic variables are special and rare celestial objects which can provide constraints on accretion disk and binary evolution theory. At present, only a few CVs with spectra are identified and the research on CVs are affected. The survey of LAMOST has already produced massive spectra, which provides data source and good condition for finding more CVs and research afterwards.The main work for this research includes:1.To develop a novel set of methods to identify CVs from the LAMOST spectra in an effective and efficient manner; 2. By cross match with SDSS data to study the photometric model of CVs with regression analysis;3 To find CVs candidates in SDSS photometric data and identify them with LAMOST,and the photometric model is improved accordingly; 4. To research the parameters of CVs with more CVs spectra; 5. To study the orbit period gap and superhump of CVs etc with follow-up observation of Shandong university 1m telescope.
英文关键词: Guoshoujing telescope;Cataclysmic variables;Large-scale data processing;Data mining;Feature extration