NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-03-20 T06:00:21 PDT
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Notes for object IC 4721

5 note(s) found in NED.


1. 1994CAG1..B...0000S
Re:IC 4721
Pair [with IC 4720]
Sc(s)II
CD-1480-S/Br
May 11/12, 1980
103aO + GG385
27 min
IC 4721 forms a physical pair with IC 4720
(Sc) at an angular separation of 8.5'. The
redshifts are v_o(4720) = 2104 km/s and
v_o(4721) = 2405 km/s. At the mean redshift
distance of 45 Mpc the projected linear separation
of the pair is 111 kpc. An E0 galaxy of unknown
redshift exists at the small angular separation of
2.2' from IC 4721. It can be seen on the print here.
If it is associated with the pair, its projected
linear separation from IC 4721 is small, at 29
kpc.

2. 1985SGC...C...0000C
Re:IC 4721
Plate 1790
Bright nucleus, patchy (r'): 1.1: x 0.3. Jet or companion superposed 0.85
north-preceding. E0 2.2 south.

3. 1982ESOU..C...0000L
Re:ESO 183003-5832.2
=ESO 140- G 27
interacting? with ESO 140- G 25
Elliptical 2.2 south

4. 1976RC2...C...0000d
Re:IC 4721
Pair with IC 4720 at 9 arcmin.

5. 1964RC1...C...0000d
Re:IC 4721
Very small, bright nucleus. There are stars or nebulous knots in faint arms.
See also M.N.R.A.S., 81, 602, 1921.
Pair with IC 4720 at 9 arcmin.


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