UGC 6077 is a typical case of a Type II profile, where the exponential outer
profile does not continue all the way inward before the bulge takes over the
luminosity in the central part of the galaxy. Morphologically these galaxies
are in general barred with strong spiral arms forming at the end which are
tightly wound to form a ring. Sometimes the bar is less pronounced. Moving to
longer wavelengths the bump becomes less pronounced as the enhanced star
formation does not show up so clearly at those wavelengths. None of the tested
fitting models is able to decompose this type of galaxies well. One has to
adjust the exponential law of the disk to contain an inner hole or one has to
model spiral arms in the disk. None of the fitting techniques are correct (the
r^1/4^ law fit did not even converge for this galaxy) and the central surface
brightnesses and scalelengths found are just an indication of the extent and
surface brightness of the disk.
March 21/22, 1982
The arm pattern in NGC 3485 is a
particularly good example of the NGC 1300 (s)-type
arm beginning at the ends of the bar but with
almost-complete overlap after each arm has
unwound by half a revolution to form an
almost-complete inner ring. The ring, however, is
broken, and the outer arms branch outward from
the extension of these tightly wound inner arms.
The redshift is v_o = 1395 km/s.
SB(r)b: (de Vaucouleurs)
Broad, split, uneven arms, asymmetric (r) 0.9 x 0.7
Small, very bright nucleus. Narrow smooth bar. (r): 0.7 arcmin x 0.6 arcmin.
Several knotty, filamentary arms.
Heidelberg Veroff. Vol. 9, 1926 and Lund 9 dimensions are for the bright