Sep 26/27, 1979
As in NGC 2090 on the preceding panel, the
spiral pattern in NGC 7448 is composed of two
regions of quite different surface brightness. The
inner region of the disk has tightly wound,
high-surface-brightness spiral fragments. Individual
arms are not easily identified. The surface
brightness decreases abruptly at the edge of this
inner zone. Outer individual arm fragments and
a general inter-arm spiral pattern in weak dust
lanes can be traced over the outer disk.
A cluster of unresolved HII regions exist in
one of the most conspicuous of the outer arms.
The redshift is v_o = 2485 km/s.
HII region complex at the northwest portion of the disk is
as bright as the bulge.
= Arp 013
Photograph and Photometry:
Astrofizika, 6, 367, 1970.
M.N.R.A.S., 150, 337, 1970 (mass only, no velocity)
SA(rs)bc (de Vaucouleurs)
In Arp's class "spiral galaxies with detached segments"
Small, very bright nucleus in a bright knotty pseudo (r): 0.35 arcmin x
0.2 arcmin Several bright, knotty spiral arms. High surface brightness.
Bright, rather irregular, compact spiral 2' x 0.8' in p.a. 170^deg^; small
nucleus. 29 s.n.