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Date and Time of the Query: 2019-06-16 T08:17:13 PDT
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Notes for object NGC 4689

10 note(s) found in NED.


1. 2006MNRAS.366..812C
Re:NGC 4689
As for NGC 4571, the H{alpha} emission is very patchy. The velocity field
appears slightly perturbed, showing evident signs of streamings associated with
the pseudo-spiral arms. The H{alpha} kinematics is in good agreement with the H
I (Cayatte et al. 1990) and CO (Sofue et al. 2003a) data.

2. 2003PASJ...55...59S
Re:NGC 4689
4.12 NGC 4689 CO gas is broadly distributed with amorphous morphology,
but the velocity field is normal, showing a spider diagram. The CO
intensity is weak and its distribution is patchy. PVD has a central
ridge and extended flat part. RC shows a sudden rise in the central
~ 100 pc to a velocity of ~ 70 km s^-1^, and then rises gradually to a
flat part. No clear compact component is seen in the SMD, while bulge
and disk components show up.

3. 2003PASJ...55...17S
Re:NGC 4689
6.15 NGC 4689 Like the optical spiral arm features, the CO intensity
distribution is amorphous, and is patchy and widely extended. There
appears neither spiral arms nor bars in CO, and no central peaks are
found. The peak ICO amounts only to ~24K km s^-1^, the lowest among
the observed galaxies. The velocity field indicates a regular rotation
pattern, but the central rise of rotation velocity is mild, as
indicated by the PV diagram.

4. 2002ApJS..143...73E
Re:NGC 4689
NGC 4689.---Sb: Small, slightly elliptical bulge, embedded in a
slightly elliptical, smooth inner disk. Faint spiral features emerge
from this disk at the point that its surface brightness drops rapidly.
The arms are very low contrast but clearly defined as ridges of
changing surface brightness in a very LSB outer disk.

5. 1997A&AS..125..479J
Re:NGC 4689
NGC 4689 (SAbc, 1"~110 pc, I=33.0^deg^)
Multiple features in the ellipticity and PA profiles result from flocculent
spiral structure. No clear twist occurs in the nuclear region.

6. 1994CAG1..B...0000S
Re:NGC 4689
VCC 2058
Sc(s)II.3
CD-2138-S
March 22/23, 1982
103aO
50 min
NGC 4689 is in the extreme northeastern
corner of the survey area for the Virgo Cluster
Catalog (Binggeli, Sandage, and Tammann
1985). It is listed as a cluster member, at redshift
v_o = 1508 km/s. A photograph printed to a
common angular scale with other members is
given in the photographic atlas of the Virgo
Cluster (Sandage, Binggeli, and Tammann
1985a, panel 6) showing that NGC 4689 is
among the largest of the ScII-luminosity-class
galaxies in the cluster.
The HII-region candidates in many of the
arm fragments are unresolved at the 1.5" level on
the available plate material.
Upon inspecting this image on this plate, one
viewer commented, "When man creates a sharper
telescope, God will create a fuzzier object."

7. 1976RC2...C...0000d
Re:NGC 4689
Photometry and Isodensitometry:
Ap. J. Suppl., 26, No. 230, 1973.

8. 1973UGC...C...0000N
Re:UGC 07965
SA(rs)bc (de Vaucouleurs), Sc- (Holmberg)

9. 1964RC1...C...0000d
Re:NGC 4689
Very small, bright nucleus in a bright complex central region with many
filamentary, partially resolved arms with dark lanes. Bright hexagonal
outline forms pseudo (r): 1.4 arcmin x 1.4 arcmin.
Uppsala 21 dimensions are for the bright part only.

10. 1918PLicO..13....9C
Re:NGC 4689
A rather faint spiral 3' x 2'; faint, almost stellar nucleus. Most of the matter
is in one whorl, which forms a nearly complete oval ring. 4 s.n.


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