Free Access
| Issue |
EAS Publications Series
Volume 46, 2011
PAHs and the Universe: A Symposium to Celebrate the 25th Anniversary of the PAH Hypothesis
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|---|---|---|
| Page(s) | 43 - 48 | |
| DOI | https://doi.org/10.1051/eas/1146004 | |
| Published online | 30 March 2011 | |
PAHs and the Universe
C. Joblin and A.G.G.M. Tielens (eds)
EAS Publications Series, 46 (2011) 43-48
C. Joblin and A.G.G.M. Tielens (eds)
EAS Publications Series, 46 (2011) 43-48
Dialectics of the PAH Abundance Trend with Metallicity
Service d’Astrophysique – Laboratoire AIM, CEA/Saclay, L’Orme des
Merisiers, 91191
Gif-sur-Yvette,
France ;
e-mail: frederic.galliano@cea.fr
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.
© EAS, EDP Sciences 2011