May 14/15, 1952
103aO + GG1
NGC 4124 combines the extended disk of low surface brightness of
NGC 5838 (S0_2_, panel 40) with the presence of an internal bright
ring surrounding a small nucleus in NGC 148 [S0_2_(r); panel 40]. The
internal bright ring structure is not well shown in the insert because
of the small scale of the ring and the interference with the bright
Note the change of classification from S0_3_ given in the
RSA2. The space between the nucleus and the bright internal ring was
interpreted in the RSA2 as a circular internal dust ring. We now
interpret the feature to be similar to the bright internal ring in
galaxies like NGC 148 (panel 40).
In the suggestion by Baade (1963) that S0's form a "parallel"
sequence to the normal Sa, Sb, Sc types, and that NGC 4124 would be of
class S0(c) is rejected here for the reasons discussed in the
paragraphs describing NGC 5838 (panel 40).
NGC 4124: A disk dominated object of strong inclination, with a faint
bulge and a faint spiral pattern.
SA(r)0+ (de Vaucouleurs)
Very small, very bright nucleus in a bright (r): 0.25 arcmin x 0.1 arcmin with
inner dark material. Lens: 0.4 arcmin x 0.2 arcmin. Bright outer envelope.