Intermediate spiral galaxy

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NGC 253 is an intermediate spiral galaxy located in the constellation Sculptor.

An intermediate spiral galaxy is a galaxy that is in between the classifications of a barred spiral galaxy and an unbarred spiral galaxy.[1][2] It is designated as SAB in the galaxy morphological classification scheme.[1][2]


Under the de Vaucouleurs classification system, SAB-galaxies are intermediate between SA-galaxies and SB-galaxies

Example Type Image Information Notes
SAB0- SAB0- is a type of lenticular galaxy
SAB0 SAB0 is a type of lenticular galaxy
SAB0+ SAB0+ is a type of lenticular galaxy
SAB0/a SAB0/a can also be considered a type of intermediate lenticular galaxy
Messier 65 SABa Messier object 065.jpg M65 is an "SAB(rs)a"
NGC 4725 SABab NGC 4725.jpg NGC 4725 is an "SAB(r)ab pec"
Messier 66 SABb Phot-33c-03-fullres.jpg M66 is an "SAB(s)b"
Messier 106 SABbc NGC 4258GALEX.jpg M106 is an "SAB(s)bc"
Sculptor Galaxy SABc Ngc253 2mass barred spiral.jpg Sculptor is an "SAB(s)c"
NGC 2403 SABcd NGC2403 3.6 8.0 24 microns spitzer.png NGC 2403 is an "SAB(s)cd"
SABdm SABdm can also be considered a type of intermediate Magellanic spiral
NGC 4625 SABm NGC 4625 I FUV g2006.jpg SABm is a type of Magellanic spiral (Sm) NGC 4625 is an "SAB(rs)m pec"


  1. ^ a b "Building Galaxies", Leslie Kipp Hunt, 15 October 2004
  2. ^ a b "Galaxy Formation", Malcolm S. Longair, 1998, Springer, ISSN 0941-7834