- Unbarred spiral galaxy
An unbarred spiral galaxy is a galaxy without a central bar, or one that is not a
barred spiral galaxy . It is designated with an SA in thegalaxy morphological classification scheme.
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Unbarred spiral galaxy
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Spiral galaxy — A spiral galaxy is a galaxy belonging to one of the three main classes of galaxy originally described by Edwin Hubble in his 1936 work “The Realm of the Nebulae” [cite book |last=Hubble |first=E. P. |authorlink=Edwin Hubble |title=The Realm of… … Wikipedia
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Intermediate spiral galaxy — An intermediate spiral galaxy is a galaxy that is in between the classifications of a barred spiral galaxy and an unbarred spiral galaxy. It is designated as SAB in the galaxy morphological classification scheme … Wikipedia
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