NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-21 T15:02:20 PDT
Help | Comment | NED Home

Notes for object NGC 4236

16 note(s) found in NED.


1. 2009A&A...503..409H
Re:NGC 4236
In this galaxy, Braun et al. (2007) report detecting continuum emission from the
bright knots in the disk. There is no polarized counterpart associated with
these features. The double background radio source behind the disk of NGC 4236
is detected in polarization, at about the 7% polarized fraction level with an RM
of -3 +/- 2 rad m^-2^. The two unconfused background double sources in the field
provide a consistent estimate of the Galactic foreground RM of +15 +/- 2 rad
m^-2^. The difference may well be due to the magneto-ionic ISM of NGC 4236.

2. 2007MNRAS.382.1552L
Re:NGC 4236
NGC 4236: This galaxy does not contain an obvious nucleus. Spectra of three
optical knots of emission were obtained for this galaxy. Source 1 is unresolved
and it has spectrum consistent with a foreground late G-type star. Source 2
shows strong emission lines and clear evidence of absorption features from an
underlying young stellar population. Source 3 corresponds to a relatively
low-excitation star-forming region with near-solar abundances.

3. 2007ApJS..173..538T
Re:NGC 4236
NGC 4236 (Fig. 16.48).-This SB(s)dm galaxy has very large angular extent (>20')
in our GALEX survey images. Spiral structure accentuated by large clumpy
complexes is apparent in the UV. Much of the outer UV spiral is barely
discernible on the DSS2-red imagery. The VLA H I observations of Braun (1995)
show that the gas distribution has a highly structured morphology even in the
outer disk, matching the UV emission quite closely. NGC 4236 lies in a grouping
with UGC 08201, and is often associated with the M81 group. Holm 357b also lies
to the northeast of NGC 4236, at unknown redshift.

4. 2006MNRAS.366.1265B
Re:NGC 4236
This late-type SBdm galaxy is seen nearly edge-on. Its kinematical inclination
is 76^deg^. The H? image shows that the H II regions are distributed along the
bar, with two bright regions near the end of the bar. These features are also
seen in H I (Shostak 1973). An extensive region of solid-body rotation coincides
with the bar.

5. 2005MNRAS.360.1201H
Re:NGC 4236
NGC 4236. This late-type SBdm galaxy is seen nearly edge-on. Its kinematical
inclination is 76{degrees}. The H{alpha} image shows that the H II regions are
distributed along the bar, with two bright regions near the end of the bar.
These features are also seen in H I (Shostak 1973). An extensive region of
solid-body rotation coincides with the bar.

6. 2003A&A...411..391L
Re:KIG 0523
CIG 523 - Center fitted with a 20{sigma} threshold on the brightest
central cluster.

7. 2002AJ....124..675C
Re:UGC 07306
Extremely large galaxy; the NVSS flux density may be too low.

8. 2002A&A...383..125K
Re:NGC 4236
NGC 4236. This galaxy of SBdm type has an angular dimension of 22' x 7',
much larger than the WFPC2 field of view. It is well resolved into stars
(Sandage & Bedke 1988). Based on the brightest stars, de Vaucouleurs (1978)
and Tikhonov et al. (1991) estimated its true distance modulus to be
27.65 mag and 27.56 mag, respectively. The CMD of NGC 4236 in Fig. 4 shows
the presence of RGB and asymptotic giant branch (AGB) stars, as well as
bright blue stars on the upper main sequence. We determined the TRGB
position to be I(TRGB) = 24.22 mag, which yields the true distance modulus
(m-M)_0_ = 28.24 mag. The error can be estimated as 1/2 of the peak width
at 62% of its maximum and turns out to be 0.22^m^. However, the mean-square
scatter of TRGB positions derived separately for WF2, WF3, and WF4 is only
0.04^m^.

9. 2000MNRAS.319...17L
Re:NGC 4236
NGC 4236: This galaxy has a very low surface brightness and no obvious
nucleus (Johnson 1997; Paper II). From the ROSAT HRI observations reported
here no X-ray sources have been found in the central region of the galaxy.
The only detected source (X1) is located in the galactic plane and might
have a faint optical counterpart. Notice, however, that the astrometry of
the observations is highly uncertain, given that only one optical
identification was found in the field of view of the HRI and a significant
shift was applied to both co-added images (Section 3.2.2). A 2{sigma} upper
limit for a point source located in the nuclear region of the galaxy can
be found in Table 5.

10. 1999A&AS..136...35S
Re:NGC 4236
NGC 4236 -- Gonzalez-Delgado & Perez (1994) report the presence of broad
N III {lambda}4640 and He II {lambda}4686 features in their HII
region III.

11. 1994CAG1..B...0000S
Re:NGC 4236
M81 Group
SBdIV
PH-4506-S
April 13/14, 1964
103aO
20 min
NGC 4236 is a highly resolved nearby
galaxy that Holmberg (1950) placed just outside
the border of his M81/NGC 2403 Group. The
resolution into stars in NGC 4236 is at the same
high level as in those members of the group
agreed upon by all. Both the RSA, and Kraan-Korteweg
and Tammann (1979) consider NGC 4236
to be in the group. The level of resolution
into stars shows the distance to be nearly the
same as that of NGC 2403, NGC 2366, IC 2574,
and other members of the group at m - M = 27.6
(Tammann and Sandage 1968).
The brightest stars begin to resolve at about
B = 19. The largest HII regions have (halo)
diameters of 14". The angular diameter of the
galaxy itself is large at D_25_ = 19'.
The redshift is v_o = 157 km/s, consistent
with the very high level of resolution into stars
and a nearly noiseless Hubble expansion flow just
beyond the Local Group (Sandage 1986a).

12. 1976RC2...C...0000d
Re:NGC 4236
= Holm 357a
Pair with Holm 357b at 9 arcmin.
Emission patch 5.5 arcmin at south-east end = VII Zw 446.
Photograph:
Astr. Ap., 24, 411, 1973.
Ap. J., 190, 525, 1974.
Ap. J., 191, 603, 1974.
Photometry of bright blue star:
Ap. J., 191, 603, 1974.
HII Regions and Distance Modulus:
Ap. J., 190, 525, 1974.
HI 21cm:
Ap. J., 150, 8, 1967.
Astr. Ap., 24, 405, 411, 1973.

13. 1973UGC...C...0000N
Re:UGC 07306
SB(s)dm (de Vaucouleurs), Sc+ (Holmberg)
VII Zw 446 is a "blue patchy compact" (CGPG) with m_p_ = 15.7 at the edge
of UGC 07306 south-south-following center

14. 1964RC1...C...0000d
Re:NGC 4236
= Holm 357a
Pair with an anonymous galaxy (= Holm 357b) at 9 arcmin. Very long faint bar:
3.9 arcmin x 0.4 arcmin. Highly resolved, weak outer arms.
See also Ap. J., 46, 39, 1917 = MWC 132.
Lick 1956 velocity is for the brightest emission patches in the southeast end:
5.5 arcmin from center: V = +186 km/sec (may be affected by rotation).
HII Regions:
Zeit. fur Ap., 50, 168, 1960.

15. 1956AJ.....61...97H
Re:NGC 4236
HMS Note No. 132
Brightest emission patch in [south-east] end,
approximately 5.5 arcmin from center of system.
Redshift may be affected by rotation.

16. 1918PLicO..13....9C
Re:NGC 4236
Very faint; 10' to 12' long by about 2' broad; p.a. 165^deg^. A few faint
condensations, but no discernible nucleus. Quite irregular; probably an
S-shaped spiral seen nearly edgewise.


Back to NED Home