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Proceedings Paper

Novel cross correlation method for redshift determination of galaxy spectra
Author(s): Fuqing Duan; Ping Guo
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Paper Abstract

The rapid development of the astronomical observation has led to many large sky surveys such as SDSS, 2DF, LAMOST etc. Because of the sheer size of these surveys, it becomes urgent to develop methods of reliable and automated spectral recognition. A new cross correlation technique for redshift determination of galaxy spectra is presented in this paper. We use principle components analysis to construct galaxy templates. According to the redshift candidates determined by spectra line features, cross-correlation between the observed spectrum and the templates is measured by the weighted sum of several similarity evidences. The candidate of the highest correlation is chosen as the estimated redshift. Both simulated spectra and observed spectra are used to test the proposed method, the correct rate can reach 97% above.

Paper Details

Date Published: 15 November 2007
PDF: 6 pages
Proc. SPIE 6788, MIPPR 2007: Pattern Recognition and Computer Vision, 67880F (15 November 2007); doi: 10.1117/12.746039
Show Author Affiliations
Fuqing Duan, Beijing Normal Univ. (China)
Ping Guo, Beijing Normal Univ. (China)


Published in SPIE Proceedings Vol. 6788:
MIPPR 2007: Pattern Recognition and Computer Vision

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