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Searching QSO Candidates and Calculating Their Redshfit from a Flood of Spectra
Song Yi-han1,2; Luo A-li1; Zhao Yong-heng1
2011-09-01
Source PublicationSPECTROSCOPY AND SPECTRAL ANALYSIS
Volume31Issue:9Pages:2578-2581
AbstractIn the present paper the author offers a method to search the QSO candidates and calculate their redshfit using their broad emission lines which are the most important character of quasars. It is hard to identify the lines in the quasar's spectra due to their redshifts distributing on a broad range. Spectra contain two components. One is continuum and the other is lines. The author uses a method of LFPS (low frequency points set) to build the continuum and detect the obvious emission lines, a method that can avoid the broad emission lines as a part of the continuum. The redshift can be calculated by comparing the extracted lines with the line table. The classification can be done with both emission lines and the redshift. For a better accurate rate to recognize the lines, this paper provides a method to estimate the level of the local noise. The method this paper used is independent of the flux calibration of the spectra. It can work for the spectra of the present LAMOST.
KeywordBroad Emission Line Lfps Standard Deviation Space Matching Line Table
DOI10.3964/j.issn.1000-0593(2011)09-2578-04
Indexed BySCI
Language英语
WOS IDWOS:000294797300061
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8046
Collection光学天文研究部
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Song Yi-han,Luo A-li,Zhao Yong-heng. Searching QSO Candidates and Calculating Their Redshfit from a Flood of Spectra[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2011,31(9):2578-2581.
APA Song Yi-han,Luo A-li,&Zhao Yong-heng.(2011).Searching QSO Candidates and Calculating Their Redshfit from a Flood of Spectra.SPECTROSCOPY AND SPECTRAL ANALYSIS,31(9),2578-2581.
MLA Song Yi-han,et al."Searching QSO Candidates and Calculating Their Redshfit from a Flood of Spectra".SPECTROSCOPY AND SPECTRAL ANALYSIS 31.9(2011):2578-2581.
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