SDSS-DR10中WDMS光谱的自动搜索研究

发布时间：2018-01-14 00:07

  本文关键词：SDSS-DR10中WDMS光谱的自动搜索研究　出处：《光谱学与光谱分析》2015年05期 　论文类型：期刊论文

  更多相关文章： 白矮主序双星 数据挖掘 遗传算法

【摘要】：SDSS-DR10是美国SLOAN巡天望远镜发布的最新数据,包含了首批APOGEE光谱。这些海量的天文光谱除了可以用来探寻银河系的结构和进行多波段证认外,还蕴藏着包括白矮主序双星在内的特殊天体。白矮主序双星是一类特殊的双星系统,它由两颗主序星演化而来,包含了中低质量恒星演化的终点—白矮星,以及M矮星。白矮主序双星对于密近双星的演化和参数研究有积极的意义。目前针对这类特殊天体的发现主要使用测光筛选结合后期观测证认的方法,不但准确率低,而且需要耗费较多的人工处理时间,无法满足在海量光谱数据中快速发现目标天体的需要。提出一种适用于在海量天文光谱中自动、快速发现白矮主序双星的方法。该方法针对SDSS的DR10数据,使用改进的遗传算法对海量光谱进行自动识别,寻找白矮主序双星候选体。实验共发现了4,140个白矮主序双星,通过交叉证认,其中24个是未被收录的新的源。验证了遗传算法在天文数据挖掘和自动搜索方面的有效性,为在海量光谱中快速发现特殊天体提供了另一途径。该方法也可用于在其他巡天望远镜的海量光谱中进行特定天体的自动识别。提供了新发现的白矮主序双星的赤经、赤纬等信息,补充了现有的白矮主序双星光谱库。
[Abstract]:SDSS-DR10 is the latest data released by the SLOAN Sky Survey Telescope in the United States. Contains the first APOGEE spectra. These vast amounts of astronomical spectrum can be used to explore the structure of the Milky way and to make multi-band identification. There are also special celestial bodies including white dwarf principal order binary stars. White dwarf principal order binary stars are a special binary system, which evolved from two principal sequence stars, including white dwarf stars, which are the endpoints of the evolution of low and medium mass stars. And M dwarf. White dwarf principal order binary stars have positive significance for the evolution and parameter study of dense near binary stars. At present, the method of photometric screening combined with later observation identification is mainly used in the discovery of these special celestial bodies. Not only the accuracy is low, but also need more manual processing time, which can not meet the need to quickly find the target object in the massive spectral data. A new method is proposed to automatically find the object in the massive astronomical spectrum. Based on the DR10 data of SDSS, the improved genetic algorithm is used to identify the mass spectrum automatically. A total of 4,140 white dwarf binary stars were found in the experiment. Of these, 24 are new sources that are not included. The effectiveness of genetic algorithm in astronomical data mining and automatic search is verified. This method can also be applied to the automatic recognition of certain celestial bodies in the mass spectra of other surveys. The newly discovered white and dwarf main order binary stars are also provided. Chek Ching. The red latitude information complements the existing white dwarf binary star spectral database.
【作者单位】： 山东大学(威海)机电与信息工程学院;
【基金】：国家自然科学基金项目(11473019,61201371,U1431102) 山东省自然科学基金项目(ZR2014AM015,BS2013DX022)资助
【分类号】：P145.5;P111.2
【正文快照】： 引言美国斯隆数字巡天(Sloan Digital Sky Survey,SDSS)是使用位于新墨西哥州阿帕奇山顶天文台的2.5m口径望远镜进行的巡天项目[1,2],目前正在进行第三期,主要包括四个巡天计划:(1)APOGEE;(2)BOSS;(3)SEGUE-2;(4)MARVELS。其中APOGEE和BOSS两项已经发布数据。APOGEE[3](the AP，

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