Date and Time of the Query: 2019-05-20 T13:25:37 PDT
Help | Comment | NED Home

Notes for object NGC 3953

9 note(s) found in NED.

1. 2012ApJ...754...67F
Re:NGC 3953
NGC 3953 .SBR4..-Fisher & Drory (2010) classify this bulge as pseudobulge but
acknowledge that there is no optical HST image available. Here we label it as
nonclassified. The rotational velocity profile first reaches a weak local
maximum at r ~= 2.5" before it starts rising again outside of 8". The disk
velocity dispersion rises centrally from values of ~=50 km s^-1^ at +/- 30" to
~=130 km s^-1^ at ~=8". Inside of a radius of 6" it then falls toward a central
value of ~=110 km s^-1^. The fast central increase of velocity is accompanied by
strong anti-correlated h_3_ moments with values of up to +/- 0.1 at r ~= 6";
they become correlated with velocity outside of 8". The h_4_ moments are
generally noisy in the bulge region and scatter between zero and 0.05.

2. 2005MNRAS.360.1201H
Re:NGC 3953
NGC 3953. One of the most massive spirals of the M81 group, it has been studied
in H I by Verheijen & Sancisi (2001). It is rather poor in H I and the surface
density drops near D_25_. Moreover, in CO (Helfer et al. 2003), the gas seems to
be located in a ring at the near end of the bar. In H{alpha}, the same lack of
gas in the centre can be seen, whereas the arms are well developed.

3. 2005ApJS..160...76B
Re:NGC 3953
Low discordance and good S/N. Centrally peaked {sigma}_*_ field and clear
rotation. Large central curve of growth peak. There are no previous measures of
{sigma}_*_ for NGC 3953. See Figures 17 and 20b.

4. 2002ApJS..142..223F
Re:NGC 3953
NGC 3953. This source was not detected in the NVSS. Condon (1987) shows
a 45 mJy north-south source at 1.4 GHz, 54" resolution. Single-dish
observations at 5 and 11 GHz (Garcia-Barreto et al. 1993) show that
this source is steep spectrum. Hummel (1980) establish an upper limit
of 10 mJy to any core emission at 1.4 GHz, while the 15 GHz, 4", and 0.2"
resolution observations of Nagar et al. (2000) give an upper limit of
1.3 mJy to any radio emission.

5. 2002A&A...391...83B
Re:NGC 3953
NGC 3953 (Fig. 10) is notable for its extended, diffuse, polarized radio
emission from the outer disc. No significant radio emission from the bar
and the nucleus has been detected. Significant Faraday rotation between
{lambda}22 cm and 6 cm occurs in the southern part of the galaxy
(RM ~ +15 rad m^-2^).

6. 1994CAG1..B...0000S
Re:NGC 3953
April 28/29, 1979
12 min
The multiple arms in NGC 3953 are thicker
than in NGC 2336; they cover more of the disk
and have a greater geometrical entropy; hence
the luminosity class is later than in NGC 2336.
The central region of NGC 3953 is more of
an oval than a bar. The two characteristic thin
(shock-induced) dust lanes may be present in the
central disk.
The largest HII regions (core plus halo)
resolve at about the 3" level. The redshift of
NGC 3953 is v_o = 1036 km/s.

7. 1976RC2...C...0000d
Re:NGC 3953
Observatory, 88, 239, 1968.

8. 1973UGC...C...0000N
Re:UGC 06870
SB(r)bc (de Vaucouleurs), Sb+ (Holmberg)
Companions 3.9, 190, 0.3 x 0.1; and 4.6, 156, 0.4 x 0.4, diffuse

9. 1964RC1...C...0000d
Re:NGC 3953
Small, very bright nucleus in a bright inner lens: 0.5 arcmin x 0.3 arcmin.
(r): 1.2 arcmin x 0.55 arcmin. Many knotty filamentary arms. Beginning of
resolution. Similar to NGC 6744.
See also HA 105, 230, 1937.

Back to NED Home