NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-18 T15:52:18 PDT
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For refcode 1994ApJ...428..113V:
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Copyright by American Astronomical Society. Reproduced by permission
1994ApJ...428..113V A DIAGNOSIS OF DUST IN ACTIVE GALACTIC NUCLEI THROUGH ANALYSIS OF THE INFRARED BUMP S. M. VIEGAS Instituto Astronomico e Geofisico, USP, Av. Miguel Stefano 4200,04301 Sao Paulo SP, Brazil AND M. CONTINI School of Physics and Astronomy, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel Received 1993 May 6; accepted 1993 December 10 ABSTRACT We present model calculation results for the continuum spectra of active galactic nuclei. The SUMA code has been updated and extended in order to include consistent calculations of grain temperature and grain sputtering inside the clouds of the NLR. Silicate grains with a radius of 0.2 microns are adopted. The results are discussed and compared with the observational data. The best fit to the continuum spectra is obtained for Seyfert 2 galaxies, indicating that dust resides in the narrow-line region clouds. Subject headings: dust, extinction - galaxies: active - galaxies: ISM - galaxies: nuclei - galaxies: Seyfert - infrared: galaxies
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