Long-slit spectroscopy of the 3 MU M PAH emission in the Orion Bar

Details Long-slit spectroscopy of the 3 MU M PAH emission in the Orion Bar Long-slit spectroscopy of the 3 MU M PAH emission in the Orion Bar

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...187.2006s&link_type=abstract

American Astronomical Society, 187th AAS Meeting, #20.06; Bulletin of the American Astronomical Society, Vol. 27, p.1314

Astronomy and Astrophysics

Astronomy

Scientific paper

We have obtained long-slit spectra of the Orion Bar at 3 mu m, using CGS4 at UKIRT. The spectra cover the main PAH band at 3.29 mu m, the satellite PAH band at 3.4 mu m, the underlying plateau extending out to 3.6 mu m, and additional weaker features. We wish to follow up on the narrow-band imaging of the Bar by Bregman et al. (1996, this AAS meeting), which suggests that the Bar is very clumpy and contains two distinct PAH populations: primitive PAHs with many aliphatic sidegroups within clumps, and highly processed PAHs in the interclump medium, which have had their sidegroups stripped away. We also compare the distribution of the plateau emission to the main band at 3.29 mu m, and study additional suspected emission features.

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