Physics
Scientific paper
Jan 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.577..395m&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
Physics
Astrochemistry, Molecular Data, Molecular Processes, Ism: Molecules
Scientific paper
In the framework of the interstellar PAHs hypothesis, far-IR skeletal bands are expected to be a fingerprint of single species in this class. We developed a detailed model of the photophysics of interstellar PAHs which provides a powerful tool for single-molecule identification. We here present synthetic far-IR emission spectra predicted by the above general approach, based on quantum-chemical calculations, for 20 PAHs and their respective cations, ranging in size from naphthalene (C10H8) to dicoronylene (C48H20), excited by a range of different radiation fields. Such spectra aim at a direct, quantitative comparison with present (ISO) and forthcoming (Herschel) observations. The accuracy of these spectra is essentially the same as that of the quantum-chemical vibrational analysis, and can be refined using laboratory data, when available.
Joblin Ch.
Malloci Giuliano
Mulas Giacomo
Porceddu Ignazio
Toublanc Dominique
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