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A wavelet-transform-based method for the automatic detection of late-type stars
Liu, ZT; Zhao, RZ; Zhao, YH; Wu, FC
2005-07-01
发表期刊SPECTROSCOPY AND SPECTRAL ANALYSIS
卷号25期号:7页码:1158-1161
文章类型Article
摘要The LAMOST project, the world largest sky survey project, urgently needs an automatic late-type stars detection system. However, to our knowledge, no effective methods for automatic late-type stars detection have been reported in the literature up to now. The present study work is intended to explore possible ways to deal with this issue. Here, by "late-type stars" we mean those stars with strong molecule absorption bands, including oxygen-rich M, L and T type stars and carbon-rich C stars. Based on experimental results, the authors find that after a wavelet transform with 5 scales on the late-type stars spectra, their frequency spectrum of the transformed coefficient on the 5(th) scale consistently manifests a unimodal distribution, and the energy of frequency spectrum is largely concentrated on a small neighborhood centered around the unique peak. However, for the spectra of other celestial bodies, the corresponding frequency spectrum is of multimodal and the energy of frequency spectrum is dispersible. Based on such a finding, the authors presented a wavelet-transform-based automatic late-type stars detection method. The proposed method is shown by extensive experiments to be practical and of good robustness.
关键词Wavelet Transform Late-type Stars Astronomical Spectra Molecule Absorption Bands
WOS标题词Science & Technology ; Technology
收录类别SCI
语种英语
WOS研究方向Spectroscopy
WOS类目Spectroscopy
WOS记录号WOS:000231098900040
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/9187
专题09年以前成果
作者单位1.Chinese Acad Sci, Natl Lab Pattern Recognit, Inst Automat, Beijing 100080, Peoples R China
2.Beijing Jiaotong Univ, Sch Comp & Informat Technol, Beijing 100044, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
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Liu, ZT,Zhao, RZ,Zhao, YH,et al. A wavelet-transform-based method for the automatic detection of late-type stars[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2005,25(7):1158-1161.
APA Liu, ZT,Zhao, RZ,Zhao, YH,&Wu, FC.(2005).A wavelet-transform-based method for the automatic detection of late-type stars.SPECTROSCOPY AND SPECTRAL ANALYSIS,25(7),1158-1161.
MLA Liu, ZT,et al."A wavelet-transform-based method for the automatic detection of late-type stars".SPECTROSCOPY AND SPECTRAL ANALYSIS 25.7(2005):1158-1161.
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