NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-25 T22:22:54 PDT
Help | Comment | NED Home

Notes for object NGC 1421

8 note(s) found in NED.


1. 2006ApJS..165..307M
Re:HIPASS J0342-13
HIPASS J0342-13.This system is dominated by S1 (NGC 1421), a highly inclined SBb
galaxy whose brightest two arms, bar, and nucleus are well covered with HSB H II
regions. Its dwarf companion S2 could easily be mistaken for a background
galaxy, except for its two HSB nuclear H II regions.

2. 2002ApJS..143...73E
Re:NGC 1421
NGC 1421.---Sc: System close to edge-on. Bright symmetric nucleus
embedded in an elliptical bulge. There appears to be a diffuse bar
with a P.A. offset ~30deg from the bulge P.A. Two spiral arms emerge
from the bar feature. The arms are very well defined, but the pattern
is quite asymmetric. The disk P.A. is ~0deg. The south arm emerges
from the bar, then bends slightly to the south, and goes south in a
straight line almost all the way to the edge of the disk. It is thin,
HSB, and well defined. It has several strong knots/clumps of star
formation along it. The arm bends to the east at the southern edge of
the disk and quickly fades. The south side of the disk (east of the
arm) is knotty and shows signs for one or two lower surface brightness
armlets. The northern arm bends smoothly to the west from the bar,
then bifurcates. The inner (western) segment is thick and has a
number of bright knots, before terminating abruptly at a very
elongated bright feature. The outer segment is smooth and of LSB. It
extends approximately as far to the north as the southern arm does
south but is much less well defined.

3. 2000AJ....119.1592I
Re:NGC 1421
This galaxy is isolated (see Pogge 1989; Hummel et al. 1987)
and has complex optical structure in the central region, displaying
a small, bright optical nucleus (NED). Spiral arms are clearly
visible in the lower resolution radio continuum images of Paper I
and less obviously in the S shaped structure of Figure 1. The
galaxy has a resolved radio core extending over several hundred
parsecs (Table 3). Optical spectroscopy by Keel (1983) indicates an
H II region spectrum. VLBI observations by Sadler et al. (1995) put
an upper limit of 0.5 mJy on a parsec-scale radio core in this galaxy
at 2.3 GHz. The galaxy also has interesting X-ray structure which
extends well beyond the optical disk, mostly to the south (Fabbiano,
Kim, & Trinchieri 1992).

4. 1994CAG1..B...0000S
Re:NGC 1421
Sc
PH-7952-S
Nov 8/9, 1980
103aO
12 min
The smallness (or absence) of the nucleus,
the absence of a central bulge, and the thinness
of the disk in NGC 1421 are the reasons for
assigning the Sc classification. The spiral pattern
can be traced by noting that the brightest linear
segment of the image is a thin arm on the near
side. This segment appears to attach to the small
nucleus. The fainter pattern on the far side also
spirals out from this center.
The redshift is v_o = 2080 km/s.

5. 1976RC2...C...0000d
Re:NGC 1421
Dynamics and Mass Determination:
Bull. A.A.S., 1, 186, 1969.

6. 1968MCG4..C...0000V
Re:MCG -02-10-008
Type:
vdB - Sb^+^I:
Morg - aS6
deV - SAB:(rs:)bc
{omega} = 83 degrees.

7. 1964RC1...C...0000d
Re:NGC 1421
Very small, bright nucleus
in a complex central part with dark lane.
Classification is difficult.

8. 1918PLicO..13....9C
Re:NGC 1421
An irregular spiral seen nearly edgewise; 3' x 0.5' in p.a. 0^deg^. There is a
faint nucleus; one whorl is quite bright and shows several condensations. A
compact round spiral, 0.3' in diameter is 12' n.f. 8 s.n.


Back to NED Home