M矮星光谱型分类研究
发布时间：2018-08-29 08:19
【摘要】：M矮星的研究对于探索银河系的结构、演化以及搜寻地外生命有重要意义。获得M矮星的光谱型是一项重要的基础工作。本研究采用SLOAN DR7的M矮星样本,参考随机森林的特征重要性度量,提取M矮星可见光波段600～900nm之间的特征。提取的特征与现有的光谱分类程序Hammer中采用的特征进行对比增加了三个新的特征,并重新计算了模板的特征指数。对该方法测试结果表明,增加了新指数的程序光谱型分类结果准确度有很大提高,该方法已用于对LAMOST的M矮星光谱进行光谱型分类。
[Abstract]:The study of M dwarfs is of great significance in exploring the structure, evolution and search for extraterrestrial life in the Milky way. It is an important work to obtain the spectral form of M dwarf star. In this study, the M-dwarf samples of SLOAN DR7 were used to extract the features between 600~900nm in the visible light band of M dwarfs with reference to the feature importance measure of random forests. The extracted features are compared with those used in the existing spectral classification program Hammer, and three new features are added, and the template feature index is recalculated. The experimental results show that the accuracy of the program spectral type classification with the new index is greatly improved, and this method has been applied to the spectral classification of LAMOST's M dwarf star spectrum.
【作者单位】： 山东大学(威海)机电与信息工程学院;中国科学院国家天文台;中国科学院大学;
【基金】：国家自然科学基金项目(11078013,10973021)资助
【分类号】：P16
本文编号：2210723
[Abstract]:The study of M dwarfs is of great significance in exploring the structure, evolution and search for extraterrestrial life in the Milky way. It is an important work to obtain the spectral form of M dwarf star. In this study, the M-dwarf samples of SLOAN DR7 were used to extract the features between 600~900nm in the visible light band of M dwarfs with reference to the feature importance measure of random forests. The extracted features are compared with those used in the existing spectral classification program Hammer, and three new features are added, and the template feature index is recalculated. The experimental results show that the accuracy of the program spectral type classification with the new index is greatly improved, and this method has been applied to the spectral classification of LAMOST's M dwarf star spectrum.
【作者单位】： 山东大学(威海)机电与信息工程学院;中国科学院国家天文台;中国科学院大学;
【基金】：国家自然科学基金项目(11078013,10973021)资助
【分类号】：P16
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