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Dialectics of the PAH Abundance Trend with Metallicity

Published online by Cambridge University Press:  30 March 2011

C. Joblin ,
A.G.G.M. Tielens  and
F. Galliano
F. Galliano*
Affiliation:
Service d’Astrophysique – Laboratoire AIM, CEA/Saclay, L’Orme des Merisiers, 91191 Gif-sur-Yvette, France;. e-mail: frederic.galliano@cea.fr

Abstract

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This paper reviews the various processes that have been proposed to explain the observed trend of PAH strength with metallicity. It summarizes a study showing that, although PAH destruction by hard radiation is important in low-metallicity environments, it is not sufficient to explain their paucity. In these systems, the deficiency of their formation mechanism, related to stellar evolution, has to be invoked.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 46: PAHs and the Universe: A Symposium to Celebrate the 25th Anniversary of the PAH Hypothesis , 2011 , pp. 43 - 48
Copyright
© EAS, EDP Sciences 2011

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