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Date and Time of the Query: 2019-05-22 T08:05:51 PDT
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Notes for object NGC 1493

9 note(s) found in NED.


1. 2002ApJS..143...73E
Re:NGC 1493
NGC 1493.---SBb: Nuclear point source embedded in
elliptical bulge with a small, high-contrast bar. Flocculent
spiral pattern emerges, with structure apparent starting at
the ends of the bar. The arms are moderately tightly wound.
Arms have many bright knots, and at low light levels there
is evidence for up to four arms, each with multiple
segments.

2. 2002A&A...391...83B
Re:NGC 1493
NGC 1493 (Fig. 18) shows weak radio emission from the outer spiral arms.
Polarization has only been detected in a small region in the southeast.

3. 1996AJ....111.1566P
Re:NGC 1493
NGC 1493--This late-type barred spiral shows a prominent nuclear point-like
source in its center, much brighter that the marginally resolved knots
(presumably young clusters) elsewhere in the bar. Comparison to a ground-based
H{alpha} image (Phillips 1993b) shows no significant H{alpha} emission
associated with this object, although there is a continuum source present at
the same location. Photometry of this image and a ground-based continuum image
(using comparable apertures) gives identical magnitudes to within the
uncertainties, so the unlikely case of a supernova is ruled out. Its luminosity
(see Sec. 4.2) is M_V_ ~ -12.2, which is somewhat brighter than that of the
R136a cluster (M_V_ ~ -11.3) but within the range of young superclusters seen
in some late-type starbursting galaxies (O'Connell et at. 1994). Such clusters
have half-light radii as small as 2-3 pc, which would be unresolved at this
distance. However, if the nucleus of NGC 1493 is a star cluster, it would have
to be somewhat evolved to account for the lack of H{alpha} emission.

4. 1994CAG1..B...0000S
Re:NGC 1493
SBc(rs)III
CD-201-S
Feb 9/10, 1978
103aO + GG385
45 min
HII-region candidates exist throughout the
bar and the multiple-arm spiral pattern. The
largest of the HII candidates resolves at about
the 1.5" level. Individual brightest stars are
probably present starting at about B = 21.5. The
redshift of NGC 1493 is v_o = 910 km/s.
A probable companion (Anonymous; ImIV)
exists at a separation of 9.6'. The companion has
two HII-region candidates, both of which have
disks whose angular diameters are about 2". At
the redshift distance of 18 Mpc (H = 50) for
NGC 1493 the projected linear separation of the
pair would be 50 kpc.

5. 1985SGC...C...0000C
Re:NGC 1493
Plate 2672
Overexposed bar, incomplete (r): 0.85 x -; very knotty. Small IBm with
3 bright knots 9.7 south-south-preceding.

6. 1982ESOU..C...0000L
Re:ESO 035554-4621.2
=ESO 249- G 33
2 small companions 4.0 north following, 7.5 north following

7. 1979AJ.....84..472S
Re:NGC 1493
Very many knots of high surface brightness that do
not resolve on this plate with 2 arcsec seeing disks.
A lower-surface-brightness knot (probable HII region)
has 3 arcsec diameter.
A nearby, low-surface-brightness dwarf (Im?) = ESO 249- G 032
at RA(1950) = 03:55.8, DEC(1950) = -46:31
has two clearly resolved HII regions,
the largest of which is about 4 arcsec in diameter;
the other is 3 arcsec.

8. 1976RC2...C...0000d
Re:NGC 1493
Radio Observations:
Australian J. Phys., 19, 883, 1966.

9. 1964RC1...C...0000d
Re:NGC 1493
Very small, bright nucleus.
Short bar
(r): 1.2 arcmin x 1.1 arcmin.
Knots in (r) and arms.


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