A binary system of tailed radio galaxies

Details A binary system of tailed radio galaxies A binary system of tailed radio galaxies

2004-02-24

arxiv.org/abs/astro-ph/0402574v2

Mon.Not.Roy.Astron.Soc. 351 (2004) 101

Astronomy and Astrophysics

Astrophysics

10 pages, 9 figures, accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2004.07757.x

We present a detailed study of a binary system of tailed radio galaxies which, along with 3C75, is the only such binary known to exist. The binary is located in a region of low galaxy density at the periphery of a poor cluster Abell S345, but lies close to the massive Horologium Reticulum supercluster. The radio sources have bent tail morphologies and show considerable meandering and wiggling along the jets, which are collimated throughout their lengths. This work presents observations of the large-scale-structure environment of the binary tailed radio sources with a view to examining the influence of large-scale flows on the morphology and dynamics of the associated radio tails. We argue that the orbital motions of the host galaxies together with tidal accelerations toward the supercluster have resulted in the complex structure seen in these radio tails.

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