Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...418..673p&link_type=abstract
Astrophysical Journal v.418, p.673
Astronomy and Astrophysics
Astronomy
250
Galaxies: Active, Galaxies: Nuclei, Galaxies: Seyfert, Infrared: Galaxies, Ism: Dust, Extinction
Scientific paper
In a previous paper we computed the IR properties predicted for the dusty obscuring tori believed to surround many AGNs. Here we make a detailed comparison of the predictions with published observations. We find good agreement between the model predictions and the observed continuum of NGC 1068, the 3.5-10.5 microns colors of type 2 Seyfert galaxies, the observed range in behavior of the 10 microns silicate feature and 8-13 microns spectral index in both types of Seyfert galaxies, and several examples of anisotropy in the IR emission from AGNs. To explain the IR continua of type 1 Seyfert galaxies and quasars, we suggest that a small amount of dust may exist well inside the inner edge of the torus proper and that the host galaxy often dominates in the far-infrared. If this description of the near-IR continua is correct for quasars, a population of obscured "type 2" quasars should also exist. High angular resolution observations suggest that the torus in NGC t068 is larger than predicted in our geometrically simple models. We suggest a modification of this geometry which is consistent with all the data. We explain the 1"-2" extended IR emission in NGC 1068 partly by radiation from the torus which is reflected by electron scattering, and partly by dust in the narrow line region.
Krolik Julian H.
Pier Edward A.
No associations
LandOfFree
Infrared Spectra of Obscuring Dust Tori around Active Galactic Nuclei. II. Comparison with Observations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Infrared Spectra of Obscuring Dust Tori around Active Galactic Nuclei. II. Comparison with Observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared Spectra of Obscuring Dust Tori around Active Galactic Nuclei. II. Comparison with Observations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-784256