Fig. 4
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5–15 μm spectrum of the same species, and in the same proportions, as in Fig. 1. The vertical long-dashed black lines indicate the band centres of the interstellar emission bands. The short-dashed (shaded area) and solid green lines show the a-C(:H) modes (range) assigned to CH and CC bonds, respectively (e.g. Dartois et al. 2005; Pino et al. 2008; Robertson 1986).
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