NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-23 T05:22:16 PDT
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Notes for object NGC 4623

4 note(s) found in NED.


1. 2006ApJS..164..334F
Re:VCC 1913
VCC 1913 (NGC 4623).This galaxy is somewhat similar to VCC 1630 in that it shows
(more clearly in this case) the presence of a thick, edge-on nuclear stellar
disk, about 1" in radius. From the color image, the disk appears slightly bluer
than the host galaxy. A nucleus is quite apparent in the individual images, and
seems to affect the surface brightness profile in the inner 0.3". At larger
scales, the galaxy appears to have a "structure within the structure"
morphology: within the inner 7", the light is dominated by a boxy bulge. Beyond,
there appears to be a disky (or at least highly elongated) "halo" or disk. The
transition between the two structures is quite abrupt and can be seen as a
discontinuity in the surface brightness profile in the individual images. All of
the structures share the same major axis.

2. 1994CAG1..B...0000S
Re:NGC 4623
VCC 1413
E7
PH-628-B
June 20/21, 1952
103aO + GG1
45 min
NGC 4623 here and only one other galaxy (NGC 4342; panel 23) are
classed as pure E7 in the RSA2. All other such highly flattened
early-type galaxies are classed S0 based on the presence of a
disk. Because E7's are so rare, one questions if NGC 4623 and NGC 4342
themselves might have disks, making E6 galaxies the flattest of the
pure E forms.
The outer isophotes on the major axis in NGC 4623 are very
slightly pointed, suggesting a weak disk. However, the effect is
subtle enough that we have retained the E7 classification here until
measured isophotal maps become available.

3. 1994AJ....108.1579v
Re:NGC 4623
This galaxy resembles NGC 4570. It has a fairly constant position
angle, an ellipticity decreasing inward with a sudden increase for a <
1.4", and isophotes that are disky outside, boxy between 2" and 7" and
disky again for a ~< 2". The residual map [Fig. 7(c)] reveals an inner
disk with a diameter of ~3" (210 pc) and aligned with the main body of
the galaxy. Thus NGC 4623, like NGC 4570, is a lenticular with both an
inner and an outer disk. Variations in the 3{theta} profile at small
radii may indicate dust. Taking the effects of seeing into account, these
results are consistent with Nieto et al. (1991b).

4. 1994A&AS..105..481M
Re:NGC 4623
NGC 4623: This is a clear case of "E - like S0". There is no evidence
of the bar implied by the SB0 type in the RC2.


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