Extinction in infrared-emitting galactic nuclei

Details Extinction in infrared-emitting galactic nuclei Extinction in infrared-emitting galactic nuclei

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...229..111l&link_type=abstract

Astrophysical Journal, Part 1, vol. 229, Apr. 1, 1979, p. 111-117. NSF-supported research.

Astronomy and Astrophysics

Astronomy

100

Galactic Nuclei, Galactic Radiation, Infrared Astronomy, Infrared Spectra, Interstellar Extinction, Absorption Spectra, Astronomical Maps, Cosmic Dust, Graphs (Charts)

Scientific paper

Fourteen galaxies have been surveyed for a silicate feature at 10 microns by using filter photometry. The finding of silicates in many classes of galaxy indicates that thermal radiation from dust is a common emission mechanism for galaxies with 10-micron excesses. Near-infrared observations are used to supplement the 10-micron data, and a study of NGC 6946 at 2 microns demonstrates that its nucleus is so heavily obscured that the true location of the nucleus cannot be determined from optical data.

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