Appendix B: Radio maps

B.1. VLA maps of the WN sample

VLA maps of the WN sample. The contour scheme is a geometric progression in $\sqrt 2$, which implies a factor 2 change in surface brightness every 2 contours. The first contour level, indicated above each plot, is at $3\sigma_{\rm rms}$, where $\sigma_{\rm rms}$ is the rms noise determined around the sources. The restoring beams are indicated in the lower left corner of the plots. Two maps are given for each source, one showing a 6$^\prime$ field of view to show possible related components, and a smaller blow-up of the source to show its morphology. The open cross indicates the NVSS position. Sources identified on the POSS have been marked in the top right corner.

B.2. FIRST maps of the WN sample

FIRST maps of the WN sample. Contours are as in Sect. B.1.

B.3. VLA maps of the TN sample

VLA maps of the TN sample. Contours are as in Sect. B.1.

B.4. FIRST maps of the TN sample

FIRST maps of the TN sample. Contours are as in Sect. B.1.

B.5. ATCA maps of the TN sample

ATCA maps of the TN sample. Contours are as in Sect. B.1.

B.6. ATCA maps of the MP sample

ATCA maps of the MP sample. Contours are as in Sect. B.1.