Mass reconstruction in disc like galaxies using strong lensing and
  rotation curves: The Gallenspy package
  Two methods for mass profiles reconstruction in disc-like galaxies are
presented in this work, the first is done with the fit of the rotation curve
based on the data of circular velocity which are obtained observationally in a
stars system, while the other method is focused in the Gravitational Lensed
Effect (GLE). For these mass reconstructions, two routines developed in the
language of programming python were used: one of them is Galrotpy, which was
built by members of the Galaxies, Gravitation and Cosmology group from the
Observatorio Astron\'omico Nacional of the Universidad Nacional de Colombia and
whose funtionality is applied in the rotation curves, the other routine is
Gallenspy which was created in the development of this work and it is focused
in the GLE. It should be noted that both routines perform a parametric
estimation from the Bayesian statistics, which allows obtaining the
uncertainties of the estimated values. Finally is shown the great power of
combining galactic dynamics and GLE, for this purpose the mass profiles of the
galaxies SDSSJ2141-001 and SDSSJ1331+3628 were reconstructed with Galrotpy and
Gallenspy where these results obtained are compared with those reported by
other authors regarding these systems. Keywords: Mass reconstructions, GLE,
rotational curves, mass profiles, Gallenspy, Galrotpy.
