Similarity Measurement Among Classification Templates for LAMOST Stellar Spectra
文献类型：期刊论文
| 作者 | Chen Shu-xin2,3; Sun Wei-min2; Kong Xiao1 |
| 刊名 | SPECTROSCOPY AND SPECTRAL ANALYSIS
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 38期号:6页码:1922-1925 |
| 关键词 | Similarity measurement Euclidean distance Mahalanobis distance Stellar spectrum template LAMOST (large sky area multi-object fiber spectroscopy telescope) |
| ISSN号 | 1000-0593 |
| DOI | 10.3964/j.issn.1000-0593(2018)06-1922-04 |
| 英文摘要 | With the vigorous development of the astronomical spectral big data acquired, such as LAMOST, assessments of the automated data reduction and analysis are necessary. The above work uses the Euclidean distance analysis to determine the similarity between LAMOST spectra and the template. The accuracy of star classification depends on the high-quality template spectra. Classification results from LAMOST 1D pipeline depend on the 183 templates, of which the dependencies should be inspected. In this paper, we calculate both Euclidean and Mahalanobis distances for each pair of templates, using these methods to get the template mean and maximum of A, F, G, K, M stars'. By completing the correlation analysis, we find that the distances averagely show similarity except for several templates. The Mahalanobis distances can even detect the difference between adjacent pairs. They can further identify that the slight differences between the similar templates have better discriminating effects. We conclude from our experiment that most of the LAMOST spectra are correctly classified, while some outstanding templates should be checked as the basis of the optimization for improving the accuracy and reliability of LAMOST templates. |
| WOS研究方向 | Spectroscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:000435531000047 |
| 出版者 | OFFICE SPECTROSCOPY & SPECTRAL ANALYSIS |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/21794]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Sun Wei-min |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Harbin Engn Univ, Minist Educ, Key Lab In Fiber Integrated Opt, Harbin 150001, Heilongjiang, Peoples R China 3.Qiqihar Univ, Coll Mech & Elect Engn, Qiqihar 161006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen Shu-xin,Sun Wei-min,Kong Xiao. Similarity Measurement Among Classification Templates for LAMOST Stellar Spectra[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2018,38(6):1922-1925. |
| APA | Chen Shu-xin,Sun Wei-min,&Kong Xiao.(2018).Similarity Measurement Among Classification Templates for LAMOST Stellar Spectra.SPECTROSCOPY AND SPECTRAL ANALYSIS,38(6),1922-1925. |
| MLA | Chen Shu-xin,et al."Similarity Measurement Among Classification Templates for LAMOST Stellar Spectra".SPECTROSCOPY AND SPECTRAL ANALYSIS 38.6(2018):1922-1925. |
入库方式： OAI收割
来源：国家天文台
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