Do Markarian 'double nucleus' galaxies have two nuclei? The case of MKN 788

Astronomy and Astrophysics – Astronomy

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Galactic Nuclei, Markarian Galaxies, Galactic Evolution, Galactic Radiation, Galactic Structure, Infrared Astronomy, Infrared Imagery

Scientific paper

Mkn 788 is a classic example of a 'double nucleus' Markarian galaxy. Previous studies have failed to distinguish between the two 'nuclei' in any physically significant way. An infrared image at 2.2 microns taken with the IRCAM on UKIRT is presented which shows source A to be the galaxy nucleus, and source B to probably be an extra nuclear H II region. This example suggests that it is premature to discuss 'double nucleus' Markarian galaxies as such until further studies can demonstrate the reality of the multiple nuclei.

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