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Title: The C-C-C bending modes of PAHs : a new emission plateau from 15 to 20 mum
Authors: Van Kerckhoven, Caroline
Hony, S
Peeters, E
Tielens, AGGM
Allamandola, LJ
Hudging, DM
Cox, P
Roelfsema, PR
Voors, RH
Waelkens, Christoffel
Waters, Laurentius
Wesselius, PR #
Issue Date: 2000
Publisher: Springer verlag
Series Title: Astronomy and Astrophysics vol:357 issue:3 pages:1013-1019
Abstract: We have obtained 2.5-45 mu m spectra of a sample of compact H II regions, YSOs and evolved stars in order to study the origin and evolution of interstellar Polycyclic Aromatic Hydrocarbon molecules (PAHs). Besides the well-known, strong PAH bands at 3.3, 6.2, 7.7, 8.6, and 11.2 mu m, these spectra reveal for the first time, a ubiquitous emission plateau from 15 to 20 mu m While the overall shape of this plateau is very similar in all sources, the detailed profiles vary from source to source. In particular, some sources show a distinct emission feature at 16.4 mu m. Moreover, the integrated intensity of this plateau varies relative to the PAH emission features by a factor 10 in our sample.
URI: 
ISSN: 0004-6361
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
# (joint) last author

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