A near-infrared and optical study of X-ray selected Seyfert Galaxies. I - Observations

Astronomy and Astrophysics – Astronomy

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Astronomical Photometry, Infrared Astronomy, Near Infrared Radiation, Seyfert Galaxies, X Ray Sources, Galactic Structure

Scientific paper

The authors present broad-band photometric observations between 0.35 and 3.5 μm for a complete sample of pre-Einstein X-ray galaxies, most of which are Seyfert-like in nature. For most of these objects, the flux increases rapidly as one goes from the optical into the infrared. Some of the distant, high-luminosity sources, however, have relatively flat continua. For the nearby extended objects, multiaperture measurements have been obtained. These show that the stellar contribution to the nuclear light of low- and intermediate-luminosity Seyfert galaxies is often significant.

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