TN J1112-2948. First line, left: nuclear spectra in the Lyα  spectral region extracted from a nuclear aperture of 1$\genfrac{}{}{0ex}{}{″}{·}$2 radius (shown as the black circle in the narrow band image in the 20”×20” inset) with the velocity scale based on the redshift measured from the He II line. On the right, nuclear spectrum in the C IV and He II spectral region. Second line: same as the first for the companion galaxy. Third line, left: narrow band image extracted from the spectral range shown in the inset centered on the Lyα  line with superposed radio contours. The black contours mark the 2σ flux limits, and the blue cross is the point from which the brightness profile is extracted. On the right, Lyα  brightness profile. Fourth line: Voronoi-tessellated maps of velocity and FWHM of the Lyα  line.