Reducing the Searching Range of Supernova Candidates Automatically in a Flood of Spectra of Galaxies
文献类型：期刊论文
| 作者 | Tu Liang-ping1,2,3; Luo A-li3 ; Wu Fu-chao1; Zhao Yong-heng3
|
| 刊名 | SPECTROSCOPY AND SPECTRAL ANALYSIS
 |
| 出版日期 | 2009-12-01 |
| 卷号 | 29期号:12页码:3420-3423 |
| 关键词 | Supernova candidate Outlier measurement Local outlier factor |
| 英文摘要 | Supernova (SN) is one of the most intense astronomical phenomena among the known stellar activities, but compared with several billion astronomical objects which people have probed, the number of supernova the authors have observed is very small. Therefore. the authors need to find faster and higher-efficiency approaches to searching supernova. In the present paper, we present a novel automated method, which can be Successfully Used to reduce the range of searching for la Supernova candidates in a huge number of galaxy spectra. The theoretical basis of the method is clustering and outlier picking, by introducing and Measuring local outlier factors of data samples. description of statistic characters of SN emerges in low dimension space. Firstly, eigenvectors of Peter's la super-nova templates are acquired through PCA projection, and the description of la supernova's statistic characters is calculated. Secondly, in all data set, the local outlier factor (LOF) of each galaxy is calculated including those SN and their host galaxy spectra, and all LOFs are arranged in descending order. Finally, spectra with the largest first one percent of all LOFs should be the reduced la SN candidates. Experiments show that this method is a robust and correct range reducing method. which can get. rid of the galaxy spectra without supernova component automatically in it flood of galaxy spectra. It is a highly efficient approach to getting the reliable candidates in a spectroscopy Survey for follow-up photometric observation. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000272565300062 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7478]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Inst Automat, Beijing 100190, Peoples R China 2.Univ Sci & Technol Liaoning, Sch Sci, Anshan 144051, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tu Liang-ping,Luo A-li,Wu Fu-chao,et al. Reducing the Searching Range of Supernova Candidates Automatically in a Flood of Spectra of Galaxies[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2009,29(12):3420-3423. |
| APA | Tu Liang-ping,Luo A-li,Wu Fu-chao,&Zhao Yong-heng.(2009).Reducing the Searching Range of Supernova Candidates Automatically in a Flood of Spectra of Galaxies.SPECTROSCOPY AND SPECTRAL ANALYSIS,29(12),3420-3423. |
| MLA | Tu Liang-ping,et al."Reducing the Searching Range of Supernova Candidates Automatically in a Flood of Spectra of Galaxies".SPECTROSCOPY AND SPECTRAL ANALYSIS 29.12(2009):3420-3423. |
入库方式： OAI收割
来源：国家天文台
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