Disc galaxy
From Infogalactic: the planetary knowledge core
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The Sculptor Galaxy (NGC 253)
A disc galaxy is a galaxy characterized by a disc, a flattened circular volume of stars. These galaxies may or may not include a central non-disc-like region (a galactic bulge).
Disc galaxy types include:
- spiral galaxies
- unbarred spiral galaxies (types S, SA)
- barred spiral galaxies (type SB)
- intermediate spiral galaxies (type SAB)
- lenticular galaxies (types E8, S0, SA0, SB0, SAB0)
Galaxies that are not disc types include:
- elliptical galaxies (type dE)
- irregular galaxies (type dI)
| Morphology | |
|---|---|
| Structure | |
| Active nuclei | |
| Energetic galaxies | |
| Low activity | |
| Interaction | |
| Lists | |
| See also | |
