Galaxy Spectrum Subtraction of a Mixed Spectrum Based on Two Class PCA Eigen-Spectra
文献类型：期刊论文
| 作者 | Tu Liang-ping1,2; Wu Fu-chao1 ; Luo A-li3; Zhao Yong-heng3
|
| 刊名 | SPECTROSCOPY AND SPECTRAL ANALYSIS
 |
| 出版日期 | 2010-06-01 |
| 卷号 | 30期号:6页码:1707-1711 |
| 关键词 | Galaxy spectrum subtraction Principal component analysis Orthogonal transformation |
| 英文摘要 | The authors present a new method called two class PCA for decomposing the mixed spectra, namely, for subtracting the host galaxy contamination from each SN spectrum. The authors improved the quality of reconstructed galaxy spectrum and computational efficiency, and these improvements were realized because we used both the PCA eigen spectra of galaxy templates library and SN templates library to model the mixed spectrum. The method includes mainly three steps described as follows. The first step is calculating two class PCA eigen spectra of galaxy templates and SN templates respectively. The second step is determining all reconstructed coefficients by the SVD matrix decomposition or orthogonal transformation. And the third step is computing a reconstructed galaxy spectrum and subtracting it from each mixed spectrum. Experiments show that this method can obtain an accurate decomposition of a mixed synthetic spectrum, and is a method with low time-consumption to get the reliable SN spectrum without galaxy contamination and can be used for spectral analysis of large amount of spectra. The time consumption using our method is much lower than that using chi(2)-template fitting for a spectrum. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Spectroscopy |
| 研究领域[WOS] | Spectroscopy |
| 关键词[WOS] | DIGITAL SKY SURVEY ; II SUPERNOVA SURVEY ; DATA RELEASE ; SPECTROSCOPY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000278580200057 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/2957]  |
| 专题 | 自动化研究所_模式识别国家重点实验室_机器人视觉团队 |
| 作者单位 | 1.Chinese Acad Sci, Inst Automat, Beijing 100190, Peoples R China 2.Liaoning Univ Sci & Technol, Sch Sci, Anshan 144051, Peoples R China 3.Chinese Acad Sci, Natl Observ China, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tu Liang-ping,Wu Fu-chao,Luo A-li,et al. Galaxy Spectrum Subtraction of a Mixed Spectrum Based on Two Class PCA Eigen-Spectra[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2010,30(6):1707-1711. |
| APA | Tu Liang-ping,Wu Fu-chao,Luo A-li,&Zhao Yong-heng.(2010).Galaxy Spectrum Subtraction of a Mixed Spectrum Based on Two Class PCA Eigen-Spectra.SPECTROSCOPY AND SPECTRAL ANALYSIS,30(6),1707-1711. |
| MLA | Tu Liang-ping,et al."Galaxy Spectrum Subtraction of a Mixed Spectrum Based on Two Class PCA Eigen-Spectra".SPECTROSCOPY AND SPECTRAL ANALYSIS 30.6(2010):1707-1711. |
入库方式： OAI收割
来源：自动化研究所
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