Spectroscopy of polycyclic aromatic hydrocarbons and very small grains in photodissociation regions

Details Spectroscopy of polycyclic aromatic hydrocarbons and very small grains in photodissociation regions Spectroscopy of polycyclic aromatic hydrocarbons and very small grains in photodissociation regions

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.577..409r&link_type=abstract

In: Proceedings of the dusty and molecular universe: a prelude to Herschel and ALMA, 27-29 October 2004, Paris, France. Ed. by A

Computer Science

Interstellar Medium, Lines And Bands, Clouds, Dust, Molecules, Ngc 7023, Data Analysis, Molecular Clusters

Scientific paper

Several components of dust mid-IR emission were extracted from the analysis of the spectro-imagery ISO-CAM data of the reflection nebula NGC 7023 using a singular value decompositon method. This work strongly suggests that Polycyclic Aromatic Hydrocarbons (PAHs) are produced by photo-evaporation of Very Small Grains (VSGs) and are ionized close to the star. It is proposed that these VSGs are PAH clusters. The most stable structures of such clusters have been calculated, providing some interesting clues on these potential interstellar species.

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