[Comparison of different template matching methods of automatic stellar spectrum parameter measurement]. 2013

Jie Liu, and Jing-Chang Pan, and Meng Liu, and Peng Wei, and A-Li Luo
School of Mechanical, Electrical & Information Engineering, Shandong University at Weihai, Weihai 264209, China. lj2002@sdu.edu.cn

Template matching is one of the most commonly used methods of automatic stellar spectrum parameter measurement The present paper made comparisons among the three commonly used template matching methods K-Nearest Neighbor (KNN), the Chi-square minimization and cross correlation method. The Continuum normalization and flux normalization were made first. Then the three mentioned methods were compared in measurement results of stellar spectrum parameters. Experiments on SDSS DR8 large sample spectra showed that the cross correlation method had comparable advantages.

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