Intrinsic and projected properties of quasi-relaxed stellar systems

We consider the construction of self-consistent models of collisionless but quasi-relaxed stellar systems, including the ingredients that lead to departures from spherical symmetry. A two-parameter family of triaxial tidal that extend the spherical King models to the case in which an external tidal field is taken into account explicitly is presented. We illustrate several properties that characterize the intrinsic and projected structure of the models. The analysis of the relevant parameter space reveals the existence of two tidal regimes and of a critical condition in which the models are maximally extended.