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2000A&A...354L..17M - Astronomy and Astrophysics, volume 354, L17-20 (2000/2-1)
New PAH mode at 16.4 µm.
MOUTOU C., VERSTRAETE L., LEGER A., SELLGREN K. and SCHMIDT W.
Abstract (from CDS):
The detection of a new 16.4µm emission feature in the ISO-SWS spectra of NGC 7023, M17, and the Orion Bar is reported. Previous laboratory experiments measured a mode near this wavelength in spectra of PAHs (Polycyclic Aromatic Hydrocarbons), and so we suggest the new interstellar 16.4µm feature could be assigned to low-frequency vibrations of PAHs. The best carrier candidates seem to be PAH molecules containing pentagonal rings.
Abstract Copyright: ∼
Journal keyword(s): ISM: abundances - ISM: dust, extinction - ISM: reflection nebulae
Simbad objects: 5
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