Small-aperture infrared photometry of Seyfert 1 galactic nuclei

Details Small-aperture infrared photometry of Seyfert 1 galactic nuclei Small-aperture infrared photometry of Seyfert 1 galactic nuclei

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96..481s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 96, Aug. 1988, p. 481-486. Research supported by Aerospace Corp. and NSF.

Astronomy and Astrophysics

Astronomy

7

Active Galactic Nuclei, Infrared Photometry, Seyfert Galaxies, Charge Coupled Devices, Energy Distribution, Near Infrared Radiation, Polarization (Waves), Radiant Flux Density

Scientific paper

Multiaperture infrared photometry of the nuclei of five Seyfert 1 galaxies is presented. When apertures approaching the seeing limit were used, it was found that all of the nuclei have observed power law energy distributions with F(ν) ∝ ν-2 from 1.25 to 3.45 μm. After correcting for reddening, the spectral indices had a range of 1.4 < α < 1.9. These results are supported through infrared imaging of one of the program galaxies, and they demonstrate the importance of properly isolating the nuclear component from the stellar disk through the use of extremely small apertures. Although the authors cannot determine the nature of the infrared emission, their results indicate that a common energy source exists among the observed galaxies.

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