A search for structure in PAH emission in extended sources at 3.3 and 3.4 microns

Details A search for structure in PAH emission in extended sources at 3.3 and 3.4 microns A search for structure in PAH emission in extended sources at 3.3 and 3.4 microns

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.4905b&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #49.05; Bulletin of the American Astronomical Society, Vol. 26, p.1392

Astronomy and Astrophysics

Astronomy

Scientific paper

We have observed three extended sources of the infrared emission features associated with polycyclic aromatic hydrocarbons (PAHs), using a 128times 128 InSb array mounted on the 1.5 m NASA/Steward telescope on Mt. Lemmon. We used a CVF (1.5% bandpass) to isolate the emission from the 3.29 and 3.40 microns PAH features in NGC 1333 #3, Sharpless 106, and the Orion Bar. In all three sources, the 3.29 and 3.40 microns emission features arise from the same regions, but show decidedly different structure. We are analyzing the images to determine the relationship of the 3.40 microns feature to the main feature at 3.29 microns. The 3.40 microns feature may be a vibrational overtone of the 3.29 microns feature, or it may arise from attached molecular sidegroups.

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