3C 136.1, z = 0.064. - Figure 8 shows the original HST image. The
galaxy has a very elongated dumbbell shape, which prevented a model
absorption map being made. The nucleus of the galaxy is also dumbbell in
shape, presumably due to obscuration by a dust lane, but with the
elongation at right angles to that of the host galaxy. Approximately
1.5 kpc SSE of the nucleus there is a feature that may be the nucleus of
an interacting galaxy. The extended radio source is X-shaped (Leahy &
3C 136.1. - The host galaxy of 3C 136.1 is flattened and warped, most
prominently in its easternmost regions, which bend in a northeast
direction (Fig. 20). It bears no resemblance to an elliptical galaxy.
Its nucleus is double: there are two components separated by 0.25"
(300 pc) along a north-south axis. Also, a third bright emission spot is
seen 2 kpc to the southeast of the double nucleus. The peculiar
morphology of 3C 136.1 and the presence of two and possibly three nuclei
suggest that this galaxy is in the throes of a merger. The radio jet is
parallel to the optical major axis.
4.6 3C 136.1
3C 136.1 is a large source with `wings' which are visible at low frequency and
resolution (Leahy & Williams 1984). The host galaxy has not been studied in
detail because it is at low Galactic latitude: in particular, it is not known
whether it is a broad- or narrow-line radio galaxy, although it is known to
have strong emission lines. The radio images presented here are not sensitive
enough to show the lobes near the core (due to primary beam attenuation and
limited short-baseline uv coverage), and we have not attempted to make a single
image covering the whole source: Fig. 19 shows the shorter Np lobe (and the
core), and Fig. 21 the Sf lobe, at intermediate resolution. The hotspots (Figs
20 and 22) show unusually little compact structure: the brightest points (N1
and N2 in the northern lobe, S1 in the southern) have little contrast with
their surroundings. Because of the low contrast of the internal structure, we
classify the northern hotspot as a single component. There is a faint compact
feature S2 to the north-west of, and barely distinct from, S1. As the most
compact feature in the lobe, S2 qualifies as the primary hotspot.
There is no indication of a jet in these images.