Bidimensional spectrography of 5 interacting quasar-galaxy systems

Astronomy and Astrophysics – Astrophysics

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Active Galactic Nuclei, Interacting Galaxies, Quasars, Astronomical Spectroscopy, Seyfert Galaxies

Scientific paper

The fiber optics spectrograph SILFID was used for obtaining bidimensional spectroscopic data on five extragalactic systems composed of a galaxy interacting with a quasar (or AGN), the spatial resolution being approximately 1 arcsec. The objects were at low redshifts, except for 0957 + 227 which is found to be a Seyfert galaxy at z = 0.418, in interaction with a bright companion. For the four other pairs, the measured velocity difference between the AGN and its companion is small or very small. Patchy regions of ionized gas are observed between the components of the 0351 + 026 and PG 1115 + 407 systems. In both cases, the velocity difference between the companion and these patches is of the order of 500 km/s. Kaz. 163 is a Sy I interacting with a giant elliptical. PG 0119 + 229 is a bright starburst galaxy.

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