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Identification of Polycyclic Aromatic Hydrocarbons

Published online by Cambridge University Press:  04 August 2017

A. Léger  and
L. D'Hendecourt
A. Léger
Affiliation:
Groupe de Physique des Solides de l'Ecole Normale Supérieure Université Paris 7, Tour 23 - 2 place Jussieu 75251 PARIS CEDEX 05 - FRANCE
L. D'Hendecourt
Affiliation:
Groupe de Physique des Solides de l'Ecole Normale Supérieure Université Paris 7, Tour 23 - 2 place Jussieu 75251 PARIS CEDEX 05 - FRANCE

Abstract

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The nature of the Very Small Grains evidenced by K. Sellgren (1985) is discussed. Their stability suggests that they are graphitic material and specifically Polycyclic Aromatic Hydrocarbons (PAHs). The expected IR emission of a typical PAH, coronene, gives an impressive spectroscopic agreement with the five observed “Unidentified IR Emission Features”, leading to an unambiguous identification. Those PAHs are the most abundant organic molecules detected to this date (f ~ 10−5).

Type
Grains
Information
Symposium - International Astronomical Union , Volume 120: Astrochemistry , 1987 , pp. 557 - 558
Copyright
Copyright © Reidel 1987 

References

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- Sellgren, K., 1984: Ap. J. 277, 623.Google Scholar