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题名:
A principal component analysis of the equivalent widths of spectral lines of star cluster's
作者: Li, C; Kong, X; Cheng, FZ
关键词: method : data analysis ; star : abundance ; Galaxy : globular cluster ; Galaxy : open clusters ; Galaxies : Magellanic Clouds
刊名: CHINESE ASTRONOMY AND ASTROPHYSICS
发表日期: 2002-10-01
卷: 26, 期:4, 页:432-441
收录类别: SCI
英文摘要: 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.
语种: 英语
WOS记录号: WOS:000180030600007
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内容类型: 期刊论文
URI标识: http://ir.bao.ac.cn/handle/114a11/8633
Appears in Collections:光学天文研究部_期刊论文

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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

Recommended Citation:
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.
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