A method for obtaining redshifts of quasars based on wavelet multi-scaling feature matching
文献类型：期刊论文
| 作者 | Liu, Zhong-tian; Ll, Xiang-ru; Wu, Fu-chao; Zhao, Yong-heng
|
| 刊名 | SPECTROSCOPY AND SPECTRAL ANALYSIS
 |
| 出版日期 | 2006-09-01 |
| 卷号 | 26期号:9页码:1738-1741 |
| 关键词 | wavelet transform feature extraction feature matching broad emission line |
| 英文摘要 | The LAMOST project, the world's largest sky survey project being implemented in China, is expected to obtain 10(5) quasar spectra. The main objective of the present article is to explore methods that can be used to estimate the redshifts of quasar spectra from LAMOST. Firstly, the features of the broad emission lines are extracted from the quasar spectra to overcome the disadvantage of low signal-to-noise ratio. Then the redshifts of quasar spectra can be estimated by using the multi-scaling feature matching. The experiment with the 15, 715 quasars from the SDSS DR2 shows that the correct rate of redshift estimated by the method is 95.13% within an error range of 0.02. This method was designed to obtain the redshifts of quasar spectra with relative flux and a low signal-to-noise ratio, which is applicable to the LAMOST data and helps to study quasars and the large-scale structure of the universe etc. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000240785800042 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8305]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Lab Pattern Recognit, Inst Automat, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Zhong-tian,Ll, Xiang-ru,Wu, Fu-chao,et al. A method for obtaining redshifts of quasars based on wavelet multi-scaling feature matching[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2006,26(9):1738-1741. |
| APA | Liu, Zhong-tian,Ll, Xiang-ru,Wu, Fu-chao,&Zhao, Yong-heng.(2006).A method for obtaining redshifts of quasars based on wavelet multi-scaling feature matching.SPECTROSCOPY AND SPECTRAL ANALYSIS,26(9),1738-1741. |
| MLA | Liu, Zhong-tian,et al."A method for obtaining redshifts of quasars based on wavelet multi-scaling feature matching".SPECTROSCOPY AND SPECTRAL ANALYSIS 26.9(2006):1738-1741. |
入库方式： OAI收割
来源：国家天文台
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