Abstract
Using 1-20 micron ground-based IR observations, 100 and 60 micron IRAS
fluxes and optical UBVR photometry, continua for a sample of 37 Seyfert
1 galaxies are found to be simply classified in three families by means
of IR (60 micron/12 micron) and optical (1.2 micron/0.3 micron) colors.
Class A galaxies are found to be nonreddened and to present no
significant amount of cool dust or galaxy IRAS component, while Class B
galaxies are reddened AGN. Class C galaxies are shown to be both
reddened and contain large galaxy disk cool dust components.
Original language | English |
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Title of host publication | Continuum emission in active galactic nuclei; Proceedings of the Workshop, Tucson, AZ, January 11-14, 1986 |
Pages | 23 |
Publication status | Published - 31 Dec 1986 |
Keywords / Materials (for Non-textual outputs)
- Continuous Spectra
- Galactic Nuclei
- Seyfert Galaxies
- Spectrum Analysis
- Ubv Spectra
- Active Galactic Nuclei
- Astronomical Photometry
- Classifications
- Red Shift