光谱学与光谱分析 |
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Automatic Stellar Spectrum Parameter Measurement Based on Similarity Measure |
LIU Jie1, PAN Jing-chang1*, WEI Peng2, LIU Meng1, LUO A-li2 |
1. School of Mechanical, Electrical & Information Engineering, Shandong University at Weihai, Weihai 264209, China 2. Key Laboratory of Optical Astronomy, NAOC, Chinese Academy of Sciences, Beijing 100012, China |
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Abstract In stellar spectral processing, template matching method can be used to obtain comparably ideal results of stellar spectrum parameters by using pattern recognition algorithms, without computing the spectral line-index. The present paper proposed a similarity based method to measure stellar spectrum parameters automatically. First, the continuum normalization was made, and then the similarities between the stellar spectrum and the template spectrum were compared to get more accurate stellar spectrum parameters. Experiments on ELODIE spectrum showed that this method is ideal in efficiently obtaining stellar spectrum parameters.
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Received: 2012-06-03
Accepted: 2012-08-12
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Corresponding Authors:
PAN Jing-chang
E-mail: pjc@sdu.edu.cn
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[1] Zhao G, Zhao Y H, Chu Y Q, et al. Research in Astronomy and Astrophysics, 2012, 12(7): 723. [2] Katz D, Soubiran C, Cayrel R, et al. Astronomy and Astrophysics, 1998, 338(1): 151. [3] Soubiran C, Katz D, Cayrel R. Astronomy and Astrophysics Supplement Series, 1998, 133(2): 221. [4] Elsner B, Bastian U, Liubertas R, et al. Baltic Astronomy, 1999, 8: 385. [5] Fuentes O, Gulati R K. Blows and Glows 2001, 10: 209. [6] PAN Jing-chang, ZHANG Cai-ming, WEI Peng(潘景昌, 张彩明, 韦 鹏). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2012, 32(6): 1689. [7] JIANG Bin, PAN Jing-chang, GUO Qiang(姜 斌, 潘景昌, 郭 强). Journal of Electronic Science and Technology of China(电子科技大学学报), 2007, 36(006): 1292. [8] Starck J L, Siebenmorgen R, Gredel R. The Astrophysical Journal, 1997, 482: 1011. [9] Castelli F, Kurucz R L. Modelling of Stellar Atmospheres. ed. Piskunov N, Weiss W W, Gray D F(San Francisco: ASP), 2003. A20. [10] Prugniel P, Soubiran C. A&A, 2001, 369: 1048. [11] Moultaka J, Ilovaisky S, Prugniel P, et al. Publications of the Astronomical Society of the Pacific, 2004, 116(821): 693. |
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