In this work , we explore the idea that substructures like stellar clusters could be formed from the tidal stream produced in galactic minor mergers .
We use N -body and SPH simulations of satellite galaxies interacting with a larger galaxy .
We study the distribution of mass in streams to identify overdensity regions in which a substructure could be formed .
We found that without gas , no substructure formed as none of the overdensities shows a definite morphology nor dynamical stability .
Including gas we found that several clumps appear and proved to be real long standing physical structures ( t \geq 1 Gyr ) .
We analyzed the orbits , ages and masses of these structures , finding its correspondence with the halo subsystems .
We conclude that it is possible to form cluster-like structures from the material in tidal streams and found evidence in favour of the presence of dark matter in these systems .