Galaxy, unless more exotic scenarios like MOND are invoked. Notes References Grebel, Gallagher, Harbeck (2003) The Progenitors of Dwarf Spheroidal Galaxies ArXiv.org. retrieved November 2007 External links Irregular galaxies Barred spiral galaxies NGC 3109 subgroup Hydra (constellation) 3109 29128 Local Group 18350324 UGCA objects