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Irregular galaxy - Definition and Overview |
| Related Words: Charley, Vc, Vietcong, Aberrant, Adrift, Alternating, Amorphous, Anarchic, Anarchistic, Anomalous, Anomic, Asymmetric, Asymmetrical, Base, Bent, Bizarre |
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An irregular galaxy is a galaxy that does not fall into the Hubble classification for galaxies. These are galaxies that feature neither spiral nor elliptical morphology.
There are two Hubble types of irregular galaxies.
An Irr-I galaxy (Irr I) is an irregular galaxy that features some structure but not enough to place it cleanly into the Hubble sequence.
An Irr-II galaxy (Irr II) is an irregular galaxy that does not appear to feature any structure that can place it into the Hubble sequence.
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