Gustavo Morales (Chile)
gmorales @ ari.uni-heidelberg.de
Stellar Tidal Streams as Cosmological Diagnostics
A stellar tidal stream is an association of stars that once were part of a satellite or a dwarf galaxy that has now been torn apart and stretched out along its orbit by tidal forces. In the context of Local Group cosmology, stellar tidal streams present a wide spectrum of morphologies and physical variables in our data. A detailed comparison with simulations using galaxy formation theory will allow us to characterize the physical properties of these stellar features both qualitatively and numerically, using them to assess what the incidence and role of minor mergers in nearby galaxies is.
Supervisor: David Martinez-Delgado & Eva Grebel (ARI)