The near-infrared image reveals a circular galaxy. One source is visible
approximately 4.7" to the northwest of the nucleus. A bright unresolved source
is present 5.2" to the southeast. This galaxy has a known radio hot spot
detected by de Koff et al. (1996) with WFPC2. This hot spot falls outside the
smaller field of view of NIC2.
3C 20, z = 0.174. - The original image (Fig. 1) shows possibly a dust
disk and two cones of emission. Because of the complex structure of the
source it was not possible to fit ellipses to the isophotes. The
large-scale FR II class radio structure is aligned roughly perpendicular
to the proposed dust lane.
0040+517.--Detection of a radio core by Hiltner et al. (1994) shows that object
b of Jenkins et al. (1977) is the correct identification. We obtained spectra
of objects b and c of Jenkins et al. That of b is shown in the figures; c is a
The redshift has been taken from Lawrence et al. (1986). The redshift
listed by Spinrad et al. (1985) and Wall & Peacock (1985) is incorrect.
0040+517: The redshift has been taken from Lawrence et al. (1986). The
redshift listed by Spinrad et al. (1985) and Wall & Peacock (1985) is
0040+517 (3C 20).-3C 20 is a double radio source with no compact core
(an upper limit of about 12 mJy can be placed on the 5 GHz flux density
of the core: Laing 1981). Not surprisingly, it was not detected in the
finding survey, and we have not attempted to map it.
Where necessary, we have assumed H_0_ = 100h km s^-1^ Mpc^-1^
and q_0_ = 0.5 to convert angles to projected distances.
Close pair of faint red galaxies, possibly in a cluster,
near center line of 50 arcsec radio double.
First noted by
Parker, E.A., Elsmore, B., and Shakeshaft, J.R.
(1966), Nature, 210, 22.
The Sky Survey shows another galaxy
about the same brightness 20 arcsec [north-north-east],
as well as some fainter smudges nearby;
may be the bright end of a remote cluster.
The radio map in
Branson, N.J.B.A., Elsmore, B., Pooley, G.G., and Ryle, M.
1972, MNRAS, 156, 377
shows the faint galaxy pair
plotted 7 arcsec too far [west].
The pair has optical positions of
The brighter bluer object to the [east] of the pair is at