Disc galaxy
A disc galaxy (or disk galaxy) is a galaxy characterized by a galactic disc, a flattened circular volume of stars.[1] These galaxies may or may not include a central non-disc-like region (a galactic bulge).[2]
The Sculptor Galaxy (NGC 253) is a disk galaxy
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)
References
- "Disk Galaxies | COSMOS". astronomy.swin.edu.au.
- "The Galactic Bulge". burro.case.edu.
| Morphology | |
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| Structure | |
| Active nuclei | |
| Energetic galaxies | |
| Low activity | |
| Interaction | |
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