發(fā)布時間：2018-01-14 00:07

  本文關鍵詞：SDSS-DR10中WDMS光譜的自動搜索研究　出處：《光譜學與光譜分析》2015年05期 　論文類型：期刊論文

  更多相關文章： 白矮主序雙星 數(shù)據(jù)挖掘 遺傳算法

【摘要】：SDSS-DR10是美國SLOAN巡天望遠鏡發(fā)布的最新數(shù)據(jù),包含了首批APOGEE光譜。這些海量的天文光譜除了可以用來探尋銀河系的結構和進行多波段證認外,還蘊藏著包括白矮主序雙星在內的特殊天體。白矮主序雙星是一類特殊的雙星系統(tǒng),它由兩顆主序星演化而來,包含了中低質量恒星演化的終點—白矮星,以及M矮星。白矮主序雙星對于密近雙星的演化和參數(shù)研究有積極的意義。目前針對這類特殊天體的發(fā)現(xiàn)主要使用測光篩選結合后期觀測證認的方法,不但準確率低,而且需要耗費較多的人工處理時間,無法滿足在海量光譜數(shù)據(jù)中快速發(fā)現(xiàn)目標天體的需要。提出一種適用于在海量天文光譜中自動、快速發(fā)現(xiàn)白矮主序雙星的方法。該方法針對SDSS的DR10數(shù)據(jù),使用改進的遺傳算法對海量光譜進行自動識別,尋找白矮主序雙星候選體。實驗共發(fā)現(xiàn)了4,140個白矮主序雙星,通過交叉證認,其中24個是未被收錄的新的源。驗證了遺傳算法在天文數(shù)據(jù)挖掘和自動搜索方面的有效性,為在海量光譜中快速發(fā)現(xiàn)特殊天體提供了另一途徑。該方法也可用于在其他巡天望遠鏡的海量光譜中進行特定天體的自動識別。提供了新發(fā)現(xiàn)的白矮主序雙星的赤經(jīng)、赤緯等信息,補充了現(xiàn)有的白矮主序雙星光譜庫。
[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.
【作者單位】： 山東大學(威海)機電與信息工程學院;
【基金】：國家自然科學基金項目(11473019,61201371,U1431102) 山東省自然科學基金項目(ZR2014AM015,BS2013DX022)資助
【分類號】：P145.5;P111.2
【正文快照】： 引言美國斯隆數(shù)字巡天(Sloan Digital Sky Survey,SDSS)是使用位于新墨西哥州阿帕奇山頂天文臺的2.5m口徑望遠鏡進行的巡天項目[1,2],目前正在進行第三期,主要包括四個巡天計劃:(1)APOGEE;(2)BOSS;(3)SEGUE-2;(4)MARVELS。其中APOGEE和BOSS兩項已經(jīng)發(fā)布數(shù)據(jù)。APOGEE[3](the AP，

本文編號：1421138