Detecting Triaxiality in the Galactic Dark Matter Halo through Stellar
  Kinematics II: Dependence on Dark Matter and Gravity Nature
  Recent studies have presented evidence that the Milky Way global potential
may be nonspherical. In this case, the assembling process of the Galaxy may
have left long lasting stellar halo kinematic fossils due to the shape of the
dark matter halo, potentially originated by orbital resonances. We further
investigate such possibility, considering now potential models further away
from $\Lambda$CDM halos, like scalar field dark matter halos, MOND, and
including several other factors that may mimic the emergence and permanence of
kinematic groups, such as, a spherical and triaxial halo with an embedded disk
potential. We find that regardless of the density profile (DM nature),
kinematic groups only appear in the presence of a triaxial halo potential. For
the case of a MOND like gravity theory no kinematic structure is present. We
conclude that the detection of these kinematic stellar groups could confirm the
predicted triaxiality of dark halos in cosmological galaxy formation scenarios.
