The Far-Infrared Emission from the Mg+-PAH Species

Details The Far-Infrared Emission from the Mg+-PAH Species The Far-Infrared Emission from the Mg+-PAH Species

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009apj...698..275b&link_type=abstract

The Astrophysical Journal, Volume 698, Issue 1, article id. 275-280 (2009).

Astronomy and Astrophysics

Astronomy

8

Astrochemistry, Infrared: Ism, Ism: Molecules, Methods: Numerical

Scientific paper

The far-infrared (FIR) spectra of several Mg+-PAH species are studied using density functional theory. The Mg+-PAH stretching mode, regardless of the polycyclic aromatic hydrocarbon (PAH) species, carries a reasonable intensity and tends to fall in a narrow range near 40 μm. Because the bands tend to fall at very similar frequencies, the average spectra of several Mg+-PAH species produce a broadband with an intensity that is about 20% of the well known C-H out-of-plane bending mode. In contrast, an average of seven large compact pure PAHs has no FIR bands that carry any significant intensity.

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