Title: Are all satellite galaxies tidal dwarfs?

Abstract:
The evidence from observational and theoretical work has been increasingly strongly indicating 
that most, and perhaps even all satellite galaxies are most probably tidal dwarf galaxies (TDGs). 
This is evident in the comon location of putatively dark-matter dominated galaxies and TDGs in 
the baryonic Tully-Fisher relation, of the coincidence in radii and masses of dE galaxies and of 
TDGs, in the rotating disks of satellites around the Milky Way and Andromeda and in the 
correlated and flattened satellite systems of external galaxies. This has implications for the 
existence of cold or warm dark matter particles, such that the matter in the known Universe 
appears to be entriely describable by the standard model of particle physics only.