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Fig. 5


Normalized 33.6 μm bands derived from the spectra in the Sloan database (Sloan et al. 2003). The normalization is done by calculating (F/Fcontinuum) − 1. The scale of the y-axis is the same for all plots. In black are plotted the opacities of crystalline olivine (at 150 K, using CDE, see Sect. 5.1). The opacities are normalized to the level of the observed band in the range of 33.4−33.6 μm.

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