  In order to give the standard scenario of the astrophysics, we study the
Einstein theory with minimally coupled scalar field and the cosmological term
by considering the scalar field as a candidate of the dark matter. We obtained
the exact solution in the cosmological scale and the approximate gravitational
potential in the galactic or solar scale. We find that the scalar field plays
the role of the dark matter in some sense in the cosmological scale but it does
not play the role of the dark matter in the galactic or solar scale within our
approximation.
