NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-20 T10:46:51 PDT
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Notes for object NGC 2811

8 note(s) found in NED.


1. 2004A&A...415..941E
Re:NGC 2811
NGC 2811: Suggested by Marquez et al. (1999). The near-IR ellipse fits of
Jungwiert et al. (1997) indicate a possible inner ellipticity peak, though it is
at the limits of their resolution. Given the alignment, it is a candidate inner
disk, but without higher resolution images the detection remains dubious.

2. 2001A&A...368...16M
Re:NGC 2811
10. NGC 2811 is an Sa galaxy of medium inclination. The bulge has a
slightly boxy shape which leads to the dipole structure in the residuum.

3. 1999A&AS..140....1M
Re:NGC 2811
The entire galaxy almost fits in the K' image, which has a quite regular
aspect, with no obvious bar or arms (Fig. 21a). This image is very
similar to that by Jungwiert et al. (1997) in the H band. On the other
hand, the sharp-divided and difference images clearly reveal the
presence of a bar, a smaller bar and weak spiral arms (Figs. 21b and
21c). The existence of two bars is confirmed by the variations of
{epsilon} and PA (Fig. 21e).
The J/K' image is smooth, with a reddish bar and a blue surrounding
ring (Fig. 21d). The bulge + disk fits are satisfactory, with small
residuals throughout (Figs. 21f and 21g).

4. 1994CAG1..B...0000S
Re:NGC 2811
Hubble Atlas, p. 11
Sa
(E,I,1/2)
PH-703-S
Feb 28/March 1, 1954
103aO + WG2
30 min
NGC 2811 is one of the earliest Sa galaxies
having well-developed, thin spiral arms. The
bulge at the center of a smooth disk has two
massive smooth stubs of arms emerging from its
periphery. The high-surface-brightness, smooth
arms terminate at the apparent edge of the disk
after about a 45 deg wrap.
The thin, smooth outer spiral arms are
narrow and are of the multiple-armed variety
(MAS). Later Sa galaxies of the same type are
shown by the prototype cases on panel 77, such
as NGC 3449, NGC 5064, and NGC 3632 (all
Sa). The later Sb multiple-armed spiral
prototypes are NGC 5005 (panels 139, S14
here; Hubble Atlas, p. 15) and NGC 2841
(panels 142, S4, S12 here; Hubble Atlas, p. 14),
and the Sbc prototype MAS galaxy NGC 5055
(panels 191, S5 here; Hubble Atlas, p. 15). The
two MAS prototype Sa galaxies shown in the Sa
summary on panel S12 are NGC 2775 and NGC
4699.
The arms and disk of NGC 2811 are
smooth, showing no sign of resolution into HII
regions. The degree of resolution into star-forming
regions increases as we proceed along the
classification sequence from Sa to Sab and later.

5. 1974UGCA..C...0000N
Re:UGCA 155
UGCA 155:
= NGC 2811
SB(rs)a (RC1)

6. 1968MCG4..C...0000V
Re:MCG -03-24-003
Type: Sand - Sa, vB - Sb+ II - III, Morg - gkSD6, Vauc - SB(rs)a.
Photo: Sand - this photo does not help our description: the structure
is very unclear, traces of the bar barely exist.

7. 1964RC1...C...0000d
Re:NGC 2811
Very bright nucleus in weak foreshortened bar. Smooth (r): 1.0 arcmin x
0.25 arcmin in a lens: 1.7 arcmin x 0.4 arcmin. Weak outer whorls with
some dark lanes.
Heid. 9, Helwan 22 and HA 88, 2 dimensions are for the lens only.

8. 1961Hubbl.B...0000S
Re:NGC 2811
Sa
PH-703-S
Feb. 28/Mar. 1, 1954
103aO + WG2
30 min
Enlarged 7.1X
NGC 2811 is one of the earliest Sa galaxies shown in the
atlas. Notice the central nucleus embedded in an amorphous
lens. Smooth, thin, tightly wound spiral arms start
at the edge of the lens. They suggest a multiple-arm
pattern like that of NGC 2841 (Sb, pg. 14), but the pattern
is much tighter and less well defined here. There is no
trace of resolution. The photographic image of all parts
of this galaxy is smooth.


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