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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
Source PublicationCHINESE ASTRONOMY AND ASTROPHYSICS
Volume26Issue:4Pages:432-441
AbstractUsing 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.
KeywordMethod : Data Analysis Star : Abundance Galaxy : Globular Cluster Galaxy : Open Clusters Galaxies : Magellanic Clouds
Indexed BySCI
Language英语
WOS IDWOS:000180030600007
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8633
Collection光学天文研究部
Affiliation1.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
GB/T 7714
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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