A near-infrared study of a homogeneous sample of optically selected active galactic nuclei. I - The observations

Details A near-infrared study of a homogeneous sample of optically selected active galactic nuclei. I - The observations A near-infrared study of a homogeneous sample of optically selected active galactic nuclei. I - The observations

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apjs...84..185z&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 84, no. 2, p. 185-199.

Astronomy and Astrophysics

Astronomy

30

Active Galactic Nuclei, Infrared Astronomy, Near Infrared Radiation, Seyfert Galaxies, Astronomical Photometry, Charge Coupled Devices, Spectral Energy Distribution, Visible Spectrum

Scientific paper

We present IR observations of a homogeneous sample of Seyfert 1 galaxies that we also observed with CCDs in optical bands. We have K-band frames for 41 objects, and JHKL photometry for 27 of these with the UK Infrared Telescope. Methods of separating the galaxian and nuclear fluxes are presented and discussed. The nuclear and galaxian K magnitudes are derived with their errors. Our data support the claim that Seyfert galaxies usually are early-type spiral or S0 galaxies.

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