1701 + 610 - A QSO with a tidal tail

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Astronomical Spectroscopy, Charge Coupled Devices, Galactic Nuclei, Quasars, Red Shift, Image Analysis, Interacting Galaxies

Scientific paper

The authors present deep CCD imaging of the X-ray-selected QSO 1701+610, which reveals the presence of a long, curved tail exceeding 80 kpc in length. The QSO has redshift 0.169, and lies in an absorption-line galaxy that has two secondary nuclei 2.7 and 5.9 arcsec from the central nucleus, on the side away from the tail. Two bright, active, and apparently interacting galaxies only 29 and 38 arcsec from the QSO have a lower redshift of 0.052. There are other extended objects in the neighborhood whose relationship to these is not clear. This system is only the second known with a long tidal tail, and the question of QSO activation by interactions is discussed.

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