The wide angle tailed radio source NGC 2329 in the cluster A 569.

Observations of the wide-angle-tail (WAT) object associated with NGC 2329 in the A 569 cluster of galaxies, obtained in 12-h syntheses at 0.6, 1.4, and 5 GHz using the Westerbork Synthesis Radio Telescope during March and May 1982 and May 1983, are presented in maps and tables and characterized. The two tails of the WAT source are found to have linear extent 50-65 kpc and opening angle 110 deg in the 0.6-GHz and 1.4-GHz observations, with no spectrum steepening along the tails and with diffuse low-surface-brightness emission between the tails; only the central object (centered on the optical galaxy) is seen at 5 GHz. The bent structure of the WAT object is attributed to pressure asymmetries due to accretion from an extended X-ray-emitting gaseous halo onto a galaxy moving at subsonic velocity.