Counter-orbiting tidal debris as the origin of the MW DoS

Counter-orbiting tidal debris as the origin of the MW DoS

Blog Article

The thump-it Milky Way satellite galaxies show a phase-space distribution that is not expected from the standard scenario of galaxy formation.This is a strong hint at them being of tidal origin, which would naturally explain their spacial Pedal Covers distribution in a disc of satellites.It is shown that also their orbital directions can be reproduced with the debris of galaxy collisions.Both co- and counter-orbiting satellites are formed naturally in merger and fly-by interactions.