Question

what is the designation given to a galaxy with a small nuclear bulge and loosely wound arms starting from a a bar through the nuclear bulge

Answer 1

In SBc galaxies, both the arms and the bar are highly resolved into star clouds and stellar associations. The arms are open in form and can start either at the ends of the bar or tangent to a ring.

Is the Milky Way a SBc galaxy?

Originally thought to be a hubble type Sb or Sc (Sbc), astronomers now believe that the Milky Way is has a central bar and is therefore a loosely wound, barred spiral galaxy – Hubble type SBbc.

What is the difference between an SBc galaxy and an Sc galaxy?

Sa (and SBa) galaxy types have tightly wound arms and large central bulges.

Sc's (and SBc's) have loosely wound arms and a small central bulge.

Learn more about SBc galaxy here:

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