Near- and far infrared emission of Seyfert 2 galaxies and various types of star-forming galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Far Infrared Radiation, Infrared Astronomy, Near Infrared Radiation, Seyfert Galaxies, Star Formation, Starburst Galaxies, Astronomical Photometry, Correlation, Data Reduction, Infrared Astronomy Satellite, Infrared Photometry

Scientific paper

In order to study the origin of the near and far infrared emission of Seyfert 2 galaxies, we carried out near (J, H, K) infrared photometry of a small sample of Seyfert 2 and various types of star-forming galaxies, selected according to a criterium developed previously (papers I and II) that reveals enhanced star formation. All the galaxies have also good detections in IRAS bands 25, 60 and 100 micrometers. We found a strong correlation between all the near and far luminosities for the Seyfert 2 galaxies. In order to explain the position of the galaxies in the J-H, H-K diagram as well as the above mentioned correlation, we conclude that their near and far infrared emission is dominated by a post-starburst emission.

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