论文标题
具有指数修改的高斯（EMG）剖面的3μm水合带的模型：应用于水合软管和小行星
A model of the 3-μm hydration band with Exponentially Modified Gaussian (EMG) profiles: application to hydrated chondrites and asteroids
论文作者
论文摘要
我们在这里提出了一种新方法，以模拟陨石和小体反射光谱中3μm吸收带的形状。使用指数修改的高斯（EMG）曲线将频段分解为几个OH/H2O组件，以及在存在时使用高斯曲线的可能有机成分。我们将该模型与多项式和多个高斯轮廓拟合进行了比较，并表明EMGS模型返回了带状的最佳渲染，其残留物的较低。我们还建议使用Bootstrap方法在频段参数上估算误差的算法。然后，我们介绍了该模型对经受不同H2O蒸气压力的晶光分析的应用，并随着湿度的降低提供了组件的变化。这个示例强调了该模型连贯检索隐藏在更强的较强频段的能力。
We present here a new method to model the shape of the 3-μm absorption band in the reflectance spectra of meteorites and small bodies. The band is decomposed into several OH/H2O components using Exponentially Modified Gaussian (EMG) profiles, as well as possible organic components using Gaussian profiles when present. We compare this model to polynomial and multiple Gaussian profile fits and show that the EMGs model returns the best rendering of the shape of the band, with significantly lower residuals. We also propose as an example an algorithm to estimate the error on the band parameters using a bootstrap method. We then present an application of the model to two spectral analyses of smectites subjected to different H2O vapor pressures, and present the variations of the components with decreasing humidity. This example emphasizes the ability of this model to coherently retrieve weak bands that are hidden within much stronger ones.
