Infrared spectrophotometry of M 17 with ISOCAM.
D. Cesarsky, J. Lequeux, A. Abergel, M. Perault, E. Palazzi, S. Madden, D. Tran;
AaA, 1996, 315, L309
ABSTRACT:We report spectrophotometric observations of the HII region/neutral medium interface in M 17 obtained with the ISOCAM Circular Variable Filter
(CVF) in the spectral range 5.15 to 16.5{mu}m.
The lines of singly-ionized
species come mainly from the clumpy "neutral" interface, while the HII region
dominates the line emission by higher-ionization species.
The emission in the
Unidentified Infrared Bands (UIBs) comes from the molecular cloud and the interface
and extends into the HII region.
In the regions where the radiation field
is larger than about 10^4^ times the standard interstellar one, the
continuum is dominated by the emission of very small grains which are bigger than
those responsible for the UIBs.
KEYWORDS: ism: individual: m 17, ism: dust, ism: molecules, ism: atoms, infrared: ism: lines and bands, infrared: ism: continuum
CODE: cesarsky96b