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We present results from the first numerical analysis to support thehypothesis, first proposed in Coleman et al. (2004), that the Fornax dwarfgalaxy was formed from the minor merging of two dwarfs about 2 Gyr ago. Usingorbits for the Fornax dwarf that are consistent with the latest proper motionmeasurements, our dynamical evolution models show that the observed asymmetricshell-like substructures can be formed from the remnant of a smaller dwarfduring minor merging. These models also predict the formation of diffusestellar streams. We discuss how these stellar substructures depend on modelparameters of dwarf-dwarf merging, and how the intermediate-age subpopulationsfound in the vicinity of these substructures may be formed from gas accretionin the past merger events. We also suggest that one of Fornax's GCs originatesfrom a merged dwarf companion, and demonstrate where as yet undetected tidalstreams or HI gas formed from the dwarf merging may be found in the outer haloof the Galaxy.

The Fornax dwarf galaxy as a remnant of recent dwarf-dwarf merging in the Local Group