La relevancia del caos en estrellas del halo local

Abstract

We show compelling numerical evidence that chaos is undoubtedly active in the local stellar halo, however, its effect might not be large enough to foster chaotic mixing processes that can erase crucial dynamical information to detect stellar streams that are necessary to rebuild the formation history of our galaxy. Therefore, the lack of positive identifications of such coherent substructures in the neighbourhood of the Sun seems to be given, at least at first order, to the lack of precision in the observations.