  We performe N-body simulations of encounters between spherical systems
surrounded by a spherical halo. Following a preceding paper with a similar aim,
the initial systems include a spherical Jaffe model for the luminous matter and
a Hernquist model for the halo. The merger remnants from this sample are mainly
slowly rotating, prolate spheroids with a radially anisotropic velocity
distribution. The results are compared with real-life ellipticals and with the
models without halo in paper I. We argue that elliptical galaxies with evidence
of dark matter could be formed in the field via a merger of spheroids
surrounded by a dark matter halo, while ellipticals with no evidence of dark
matter might be formed via a merger of two spheroids in a cluster.
