The dwarf type of them is indicated by a small "m." Represented on the bottom prong of a Hubble tuning fork diagram, the Milky Way is now considered to be one.
Their namesake features are explained by the projection effect model, and they may be distinguished from their counterparts by the existence of a gap in their gas PVD, caused by the unavailability of orbits around corotation. Examples of them include Maffei 2 and, maybe most famously, NGC 1356 in the Fornax cluster. The dwarf type of them is indicated by a small "m." Represented on the bottom prong of a Hubble tuning fork diagram, the Milky Way is now considered to be one. With arms that extend not from the center but from a namesake central structure, FTP, name this type of galaxy abbreviated SB, a variation from a normal spiral galaxy.
Their namesake features are explained by the projection effect model, and they may be distinguished from their counterparts by the existence of a gap in their gas PVD, caused by the unavailability of orbits around corotation.
{barred spiral} galaxy (or {spiral barred}, do not accept or prompt on spiral galaxy)