@article{oai:nipr.repo.nii.ac.jp:00010103,
 author = {Miyamoto, M. and Arai, T. and Komatsu, M. and Yamamot, A. and Mikouchi, T. and Miyamoto, M. and Arai, T. and Komatsu, M. and Yamamot, A. and Mikouchi, T.},
 issue = {2},
 journal = {Polar science, Polar science},
 month = {Sep},
 note = {The Modified Gaussian Method (MGM) proposed by Sunshine et al. [Sunshine, J.M., Pieters, C.M., Pratt, S.F., 1990. Deconvolution of mineral absorption bands: an improved approach. Journal of Geophysical Research 95, 6955–6966.] is generally used to decompose spectra in the UV–Visible–NIR wavelength region into the characteristic absorption bands of minerals. Here, we compare the optimized results obtained using different curve-fitting methods for this spectrum. The result obtained using the Gaussian function for the absorption band shows a better fit than that obtained using the Lorentzian function. The background continuum of a quadratic polynomial for the wavenumber provides a better result than does the linear function for the wavenumber. We successfully decomposed the spectra of ordinary chondrites and eucrites into the absorption bands of olivine and pyroxene. The wavelength positions of these absorption bands are broadly consistent with the Fe contents of olivine and pyroxene. Although the present results are derived from a limited number of spectra, they are of use in terms of the decomposition of diffuse reflectance spectra., 惑星や小惑星の表面物質研究に用いられる紫外・可視・近赤外波長領域の反射スペクトル解析では、それぞれの鉱物の吸収帯を分離する必要がある。そのためには、Sunshine ら（１９９０）により提案されたModified Gaussian Ｍethod （ＭＧＭ）が用いられることが多い。我々は、この分離方法について、吸収帯の関数形として、ガウス関数がローレンツ関数より、バックグラウンドの関数形は、波数についての一次関数より二次関数が良い結果を与えることを示した。これは、ＭＧＭの自然な拡張となっている。また、この方法を、普通隕石とユークライト隕石の反射スペクトルについて、カンラン石と輝石の吸収帯分離に応用し、吸収帯位置がそれぞれの鉄の含有量と調和的であることを示した。},
 pages = {110--116},
 title = {Evaluation of a curve-fitting method for diffuse reflectance spectra in the UV-Visible-NIR wavelength region},
 volume = {3},
 year = {2009}
}