NGC 3338.---SAB(r)b: Nuclear point source embedded in small elliptical
bulge. There is a clear inner ring, with the spiral arms coming off
the ring. There is a two-armed spiral pattern, but both arms appear to
originate from the same spot on the ring. The arms have different
inner pitch angles and appear symmetric at large radius. Although
there are a few knots in disk, they are not associated with the
spiral arms. The arms are smooth. They are narrow and well defined at
small radii, and become broad and diffuse after winding for ~180deg.
At faint levels, the arms can be traced for another ~180deg before
fading into the sky.
Blobby radio source.
19. NGC 3338 is an Sbc spiral of medium inclination, it has thin and well
ordered arms. Correspondingly the fit procedure yielded a very low residuum
(Fig. 4 in on-line version).
Jan 6/7, 1981
The spiral pattern of NGC 3338 is intermediate
between that of a grand design and
filamentary (MAS) type. The galaxy is shown
here in the grand design section because of its
similarity to NGC 1566 (panel 171) and M51
(preceding panel). When viewed more face on (by
tipping the print along the minor axis and viewing
the page almost edge on) the similarity becomes
apparent. There are two major arms, which
specify the grand design, but as in M51 the
inter-arm regions also contain spiral fragments.
The arms in NGC 3338 are thin and well
ordered; hence the early luminosity class is
indicated. The largest of the many HII regions
resolve at the 2" level. The redshift of NGC 3338
is v_o = 1171 km/s.
In the Leo Group.
"Atlas and Catalogue", Univ. of Washington, Seattle, 1966.
Ap. J., 155, 417, 1969.
SA(s)c (de Vaucouleurs), Sc- (Holmberg)
In the Leo Group.
Small, very bright nucleus in a smooth inner lens: 0.33 arcmin x 0.17 arcmin.
Pseudo (r): 0.55 arcmin x 0.35 arcmin. 2 main knotty arms with some
branching. The is a very bright star at 2.7 arcmin.
Zeit. fur Ap., 50, 168, 1960.
Photograph and SN 1915?
Lundmark, Vistas in Astronomy, Vol.2, 1614, 1956.