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Fig. 5

Continuum and water and silicate subtracted spectrum of W33A plotted together with ice spectra of ethanol and acetaldehyde at 15 K, mixed in CO:CH3OH and H2 O. Features in the W33A spectrum are indicated with dashed lines at 7.22, 7.40, and 7.47 μm. The large spectral feature at 7.67 μm is due to CH4 and SO2.
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