Fig. A.1

Images of the FR IIs selected. Contours are drawn starting from 0.45 mJy/beam and increase with a geometric progression with a common ratio of . The field of view is 3′ × 3′ in most cases, except for those marked with a ‘X2’ at the top; the red tick at the bottom is 30″ long. The blue circle is centered on the host galaxy and has a radius of 30 kpc. The source ID and redshift are reported in the upper corners.
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