Infrared photometry and spectrophotometry of G75.84+0.4

Details Infrared photometry and spectrophotometry of G75.84+0.4 Infrared photometry and spectrophotometry of G75.84+0.4

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....74..302p&link_type=abstract

Astronomy and Astrophysics, vol. 74, no. 3, May 1979, p. 302-307. NSF-NASA-supported research.

Astronomy and Astrophysics

Astronomy

12

Astronomical Photometry, Hydrogen Clouds, Infrared Astronomy, Infrared Photometry, Spectrophotometry, Cosmic Dust, Hydrogen Ions, Stellar Evolution

Scientific paper

Photometric mapping of G75.84+0.4 at 12.6 microns is compared with previously published radio maps of the region to deduce the relative dust/gas mass ratio for the dust responsible for the 12.6-micron emission. Spectrophotometry from 2-4 microns and 8-13 microns of the highest-emission-measure region reveals the presence of the fine structure lines of forbidden Ar III at 8.99 microns, forbidden Ne II at 12.78 microns, and forbidden S IV at 10.53 microns. Estimates of the abundance of these ions are made, and the nature of the exciting source is discussed.

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