amethodofsearchingforsupernovacandidatesfrommassivegalaxyspectra
文献类型：期刊论文
| 作者 | Tu Liangping2; Luo Ali1 ; Wu Fuchao2; Zhao Yongheng1
|
| 刊名 | sciencechinaphysicsmechanicsastronomy
 |
| 出版日期 | 2010 |
| 卷号 | 53期号:10页码:1928 |
| ISSN号 | 1674-7348 |
| 英文摘要 | This paper presents a novel spectroscopic method for searching for supernova 'candidates from massive galaxy spectra, which is expected to be applied to the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST). This method includes mainly five steps. The first step is spectral preprocessing, including removing spectral noise using wavelet transform, spectral de-redshift, etc. The second step is decomposition of galactic spectra; we can get the galaxy component and supernova component and calculate the Superova Statistical Characterization Vector (SNSCV) of each galaxy spectrum. The third step is to decrease samples in all the galaxy spectral datasets according to SNSCV of each spectrum, and to use the LOF (Local Outlier Factor)-based outlier detection algorithm to obtain the preliminary selected spectral data. The fourth step is template matching by cross-correlation, according to the matched results we get the secondary selected spectral data. Finally, we choose the final supernova candidates manually through checking the spectral features characteristic of a supernova. By the spectroscopic method proposed in this paper, thirty-six supernova candidates have been detected in a dataset including 294843 galaxy spectra from the Sloan Digital Sky Survey Data Release 7. Nine of these objects are detected first and the other twenty-seven have been reported in other publications (fifteen of which are detected and reported first by us). The twenty-four new super-nova candidates include twenty Ia type supernova candidates, three Ic type supernova candidates and one II type supernova candidate |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/41280]  |
| 专题 | 光学部_LAMOST运行和发展中心 |
| 作者单位 | 1.中国科学院国家天文台 2.中国科学院自动化研究所 |
| 推荐引用方式 GB/T 7714 | Tu Liangping,Luo Ali,Wu Fuchao,et al. amethodofsearchingforsupernovacandidatesfrommassivegalaxyspectra[J]. sciencechinaphysicsmechanicsastronomy,2010,53(10):1928. |
| APA | Tu Liangping,Luo Ali,Wu Fuchao,&Zhao Yongheng.(2010).amethodofsearchingforsupernovacandidatesfrommassivegalaxyspectra.sciencechinaphysicsmechanicsastronomy,53(10),1928. |
| MLA | Tu Liangping,et al."amethodofsearchingforsupernovacandidatesfrommassivegalaxyspectra".sciencechinaphysicsmechanicsastronomy 53.10(2010):1928. |
入库方式： OAI收割
来源：国家天文台
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