Galaxies whose own Wikipedia articles cite a NED classification showing no regular disc or ellipsoidal structure at all: the Magellanic-type barred irregulars, coded SB(s)m or IBm, named for the Large and Small Magellanic Clouds that define the type, and the amorphous irregulars, coded I0, such as the starburst galaxy Messier 82. The Hubble sequence sets this class apart from the ordered spiral, lenticular and elliptical classes precisely because its members show no such regular symmetry in the light distribution their own source articles describe.
Facts
Comparison
Field Origin Era All Irregular Galaxies
Filter Results4 entries
Sources
1. Wikipedia: Hubble sequence
Wikimedia FoundationHubble sequence article, sentence naming 1926Quote, Hubble sequence article, sentence naming 1926
The Hubble sequence is a morphological classification scheme for galaxies published by Edwin Hubble in 1926.
Wikipedia: Galaxy
Large Magellanic Cloud (Wikipedia)
Has Member: Large Magellanic Cloud, infobox 'type' field: SB(s)m (NED classification, de Vaucouleurs system) filed under Irregular GalaxiesView the Source Small Magellanic Cloud (Wikipedia)
Has Member: Small Magellanic Cloud, infobox 'type' field: SB(s)m pec (NED classification, de Vaucouleurs system) filed under Irregular GalaxiesView the Source Wikipedia: Messier 82 - Wikipedia
Has Member: Cigar Galaxy, infobox 'type' field: I0 (NED classification, de Vaucouleurs system) filed under Irregular GalaxiesView the Source NGC 4449 (Wikipedia)
Has Member: Caldwell 21, infobox 'type' field: IBm (NED classification, de Vaucouleurs system) filed under Irregular GalaxiesView the Source Reader Challenges (0)
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