Fig. 2
Close up of the C-D stretching region of the spectra of a) IRAS 12073-6233 obs. 1; b) IRAS 12073-6233 obs. 2; c) NGC 3603; d) M17b; e) W51 obs. 1; f) W51 obs. 2; g) M8; and h) G75.783+0.343. The fitting results for the spectra is shown in red, the black line is the observed spectra, the HI emission lines are fit in cyan, the HeI emission line is fit in navy, and PAD and Dn-PAH features are fit in green.
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