Fig. 10
The upper panel shows the extracted component P5 (4.6 μm-1) from spectra of irradiated HAC materials (S4, S7, S8, S21 and S23). The bottom panel shows the extracted bump (4.6 μm-1) of the interstellar extinction curves of DISM (Fitzpatrick 1999) and the average galactic extinction curve, as well as towards the stars HD 698, HD 3191, NGC 457 Pesch9 and Cr 463-5 (Fitzpatrick & Massa 2007).
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