Amorphous irregular galaxies
A galaxy with no spiral structure and no symmetric shape. Irregular galaxies are usually filamentary or very clumpy in shape and tend to smaller than others. Two types of irregular galaxies are defined, Irr I galaxy and Irr II galaxy.
Irregular galaxies
Dwarf irregular galaxies
Hubble classification scheme
Magellanic irregular galaxies
De Vaucouleurs Sandage classification
Galaxies