form of the AndromedaII (AndII) dSph galaxy, one of the brightest satellites of M31. The object has a number of peculiar features. @ho12 detected strong rotation signal along the 2D minor axis which means that the object probably has a streaming motion around the longest axis in 3D, i.e. prolate rotation. Note that And II is the only dSph with a clear prolate rotation reported so far. @mcc07 identified a few distinct stellar populations in AndII differing in age, metallicity and density profiles. However, @ho12 found no significant difference in the kinematics of the metal rich and metal poor stars. The presence of the metallicity gradient was recently confirmed by @ho15 and @var14. @var14 also found an intermediate age population which makes AndII an exception among their sample of six fainter dSphs that possess only populations of stars older than 10Gyr. Moreover, @am14 reported the detection of regions with lower velocity dispersion in the kinematic data of @ho12 which can be interpreted as a presence of a stellar stream in AndII.

@lo14andii proposed a merger scenario for the origin of AndII. In this model, the merger occurs between two dwarf galaxies initially composed of a disk and a dark matter 