Date and Time of the Query: 2019-06-16 T07:32:52 PDT
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Notes for object NGC 5668

9 note(s) found in NED.

1. 2008MNRAS.388..500E
Re:UGC 09363
UGC 9363 (NGC 5668). Our observations are in agreement with previous H{alpha}
Fabry-Perot observations by Jimenez-Vicente & Battaner (2000). They adopted an
inclination of 18^deg^ derived by Schulman et al. (1996) from a tilted ring
model applied to VLA H I data. This inclination is lower than expected from
morphology (33^deg^). Our data confirm this tendency, explaining why
morphological and kinematical major axes are found to be quite different
(40^deg^). Our kinematical estimate of the inclination is close to 0^deg^ and
leads to unrealistically high rotational velocities. Thus, as Jimenez-Vicente &
Battaner (2000), we fixed the inclination to the H I value of 18^deg^. Schulman
et al. (1996) H I data show a warp starting at 120 arcsec, which is the
outermost limit of our H{alpha} rotation curve. Indeed, it is possible that the
outermost points of our H{alpha} rotation curve are affected by this warp, since
it shows a clear trend to increase from 80 to 120 arcsec, whereas the H I
observations by Schulman et al. (1996) suggest that the plateau of the curve is
already reached at 100 arcsec when correcting for the warp. The width of the H I
profile at 20 per cent (122 km s^-1^, Springob et al. 2005) is in agreement with
our H{alpha} velocity field amplitude.

2. 2007MNRAS.380..506G
Re:NGC 5668
NGC 5668 is another Sd galaxy, which has a high rate of star formation, as
indicated by its large FIR and H{alpha} luminosities (Schulman et al. 1996, and
references therein). The metal lines (Fe5015 and Mgb) appear to be centrally
concentrated, while H{beta} has a more complex appearance. The stellar
populations are young and metal-poor all over the field; the age rises out to
~=8 arcsec and then decreases (see Fig. 14 for a full view of the spatial
structure of the age map and Fig. A3 for the azimuthally averaged profiles).
Constant star formation cannot be ruled out at all ages, and is selected over a
large part of the field when allowing one to choose among constant and
exponentially declining star formation.

3. 1999A&AS..138..253B
Re:NGC 5668
NGC 5668 - SNe 1952G, 1954B: both show some faint structures slightly
north of the SN positions. The surrounding environments are crowded.
Both supernovae lie not too far from the nucleus of the galaxy and
belong to spiral arms. The May observations are slightly affected by
saturation; the March ones have a poorer signal-to-noise ratio (the
galaxy was observed well into twilight). For the March run no R band
observations are available. WFPC-2 observations resolve the underlying
spiral arm structure. The environments are not particularly crowded and
at the location of SN 1952G the same single bright object observed from
the ground is also observed with HST, i.e. it remains unresolved with

4. 1994CAG1..B...0000S
Re:NGC 5668
March 19/20, 1982
103aO + GG385
35 min
The brightest HII region in NGC 5668 is
double, apparently resolving at about the 2"
level. The numerous other HII regions are
unresolved at 1". The redshift of NGC 5668 is
v_o = 1491 km/s.

5. 1994CAG1..B...0000S
Re:NGC 5668
March 19/20, 1982
103aO + GG385
35 min
NGC 5668 is also shown on panel 264. It is
shown again here to illustrate the similarity of its
arm pattern to the pattern of other galaxies on
this panel.
The largest HII region is complex. Its halo
diameter resolves at about the 2" level. The
redshift is v_o = 1491 km/s.

6. 1976RC2...C...0000d
Re:NGC 5668
IAU Circ. No.1449, 1452, 1954.
Ann. Rev. Ast. Ap., Vol. 2, 253, 1964.
SN1952G and Photograph:
P.A.S.P., 86, 516, 1974.
HI 21cm:
Ap. J., 142, 148, 1965.
M.N.R.A.S., 150, 337, 1970.
Source R2 (Astr. Ap., 3, 292, 1969), quality D, rejected.

7. 1973UGC...C...0000N
Re:UGC 09363
SA(s)d (de Vaucouleurs)
SN 1954b

8. 1964RC1...C...0000d
Re:NGC 5668
Very small, not very bright nucleus. Bright middle. Many partially resolved,
irregular, branching arms. Similar to NGC 0300.
Lund 9 and Heidelberg Veroff. Vol. 9, 1926 dimensions are for the bright
part only.
SN 1954
H.A.C. 1425.
P.A.S.P., 72, 97, 1960.
L'Astronomie, 68, 210, 1954.
A.J., 65, 54, 1960.
Publ. Bologna, VI, 12, 1955.
Handbuch der Phys., 51, 782, 1958.

9. 1956AJ.....61...97H
Re:NGC 5668
HMS Note No. 179
Slit on nucleus and condensation 35 arcsec [north-east],
which shows weak emission H{gamma} and {lambda} 3727.

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