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A principal component analysis of the equivalent widths of spectral lines of star cluster's
Li, C; Kong, X; Cheng, FZ
2002-10-01
发表期刊CHINESE ASTRONOMY AND ASTROPHYSICS
卷号26期号:4页码:432-441
摘要Using principal component analysis, we have studied the equivalent widths of optical spectral lines of 41 Galactic globular clusters and 22 young stellar clusters. We have discovered that some characteristic spectral lines, such as the CN, Ca IIK, Ca IIH and Mg I+Mg II lines, are rather sensitive to metallicity. We have also found some lines that may be used as indicators of age, e.g. Hdelta, Hgamma, Hbeta and Halpha. These lines can help us to disentangle the coupling effects of age and metallicity in the clusters.
关键词Method : Data Analysis Star : Abundance Galaxy : Globular Cluster Galaxy : Open Clusters Galaxies : Magellanic Clouds
收录类别SCI
语种英语
WOS记录号WOS:000180030600007
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8633
专题光学天文研究部
作者单位1.Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Peoples R China
2.Acad Sinica, Natl Astron Observ, Beijing 100012, Peoples R China
3.Beijing Astrophys Ctr, Beijing 100871, Peoples R China
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Li, C,Kong, X,Cheng, FZ. A principal component analysis of the equivalent widths of spectral lines of star cluster's[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2002,26(4):432-441.
APA Li, C,Kong, X,&Cheng, FZ.(2002).A principal component analysis of the equivalent widths of spectral lines of star cluster's.CHINESE ASTRONOMY AND ASTROPHYSICS,26(4),432-441.
MLA Li, C,et al."A principal component analysis of the equivalent widths of spectral lines of star cluster's".CHINESE ASTRONOMY AND ASTROPHYSICS 26.4(2002):432-441.
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