Open Access

Fig. 9

image

Comparison between astronomical spectra integrated-intensity ratios of aromatic C=C band at 1600 cm−1 to aliphatic CHx band at 1460cm−1 according to the aliphatic CHx 1375 cm−1/1460 cm−1 ratio. The green diamonds correspond to the diffuse interstellar medium a-C:H absorptions. The red squares correspond to the class and sources in this study. The blue dots are the same ratios measured on the infrared spectra of the produced analogues.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.