Fig. A.2
Left: the 19 μm complex for the Galactic sources, continuum subtracted and normalised. Overplotted in red the mean spectrum. The mass absorption coefficients of forsterite and enstatite are plotted in green and blue. Right: same as on the left, but for the LMC sources. The top panel shows the comparison between the calculated mean for the LMC and Galactic sources.
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