EAS Publications Series
Volume 46, 2011PAHs and the Universe: A Symposium to Celebrate the 25th Anniversary of the PAH Hypothesis
|Page(s)||123 - 130|
|Published online||30 March 2011|
C. Joblin and A.G.G.M. Tielens (eds)
EAS Publications Series, 46 (2011) 123-130
Search for far-IR PAH bands with Herschel: modelling and observational approaches
Université de Toulouse, UPS, CESR, 9 Av. colonel Roche, 31028
Toulouse Cedex 4,
2 CNRS, UMR 5187, 31028 Toulouse, France
3 INAF – Osservatorio Astronomico di Cagliari – Astrochemistry Group, Strada 54, Loc. Poggio dei Pini, 09012 Capoterra ( CA), Italy
4 Department of Astronomy, University of Michigan, 500 Church Street, Ann Arbor, MI 48109, USA
Herschel opens the possibility to detect the low-frequency vibrational bands of individual polycyclic aromatic hydrocarbon (PAH) molecules and therefore to progress in our understanding of the nature of these species and the properties of the environments from which they emit. However, unless one individual molecule dominates the PAH family, this detection will not be straightforward and it is necessary to optimise the observational search with an educated guess of the band profiles and intensities. Such educated guess can be obtained from models that include a detailed description of the molecular properties (anharmonicity, rotation...) in the modelling of the cooling cascade of the emitting species. First results are expected soon from the observation of the Orion Bar as part of the HEXOS Herschel key program.
© EAS, EDP Sciences 2011
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.