How common is the Milky Way-satellite system alignment?
How common is the Milky Way-satellite system alignment?
The highly flattened distribution of satellite galaxies in the Milky Way presents a number of puzzles.Firstly, its polar alignment stands out from the planar alignments commonly found in other galaxies.Secondly, recent proper motion measurements reveal that the orbital angular momentum of at least 3, and possibly as many as 8, …