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Fig. 4.
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Nuclear spectra of J1356 and J1509, normalized at 5.4 μm. Several absorption features are shown: the ro-vibrational 4.67 μm CO band, H2O lines between ∼5.5 and 6.2 μm, the 6 μm water ice band, and the 6.85 and 7.25 μm aliphatic grain bands. Some of the most prominent H2O lines are indicated with dotted vertical lines.
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