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Style and intensity of hydration among C-complex asteroids: A comparison to desiccated carbonaceous chondrites

Vernazza, P.; Usui, F.; Schmitt, B. +3 more

Here we report a comparison between reflectance spectroscopy of meteorites under asteroidal environment (high vacuum and temperature) and Main Belt and Near Earth Asteroids spectra. Focusing on the -OH absorption feature around 3 µm, we show that the asteroidal environment induces a reduction of depth and width of the band, as well as a shif…

A model of the 3-µm hydration band with Exponentially Modified Gaussian (EMG) profiles: Application to hydrated chondrites and asteroids

Schmitt, B.; Beck, P.; Potin, S. +2 more

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 t…