Study of galaxy morphology and merging time of two interacting galaxies
  under different initial rotation and orientation configurations
  Using the GADGET-2 N-body code, we make a study of the galaxy morphology and
merging time due to two interacting galaxies (for the same types and different
sizes and masses, $1:1$ and $1:10$ ratio masses) merging due to gravity
interaction. This is done for different initial relative orientation and
rotation of these galaxies (modes of interaction) but with the same relative
bulge separation and the same relative initial velocities. It was found that
the resulting galaxy morphology resemble many of the observed galaxies in our
Universe, and that, in general, a binary galaxy system with 1:10 mass ratio has
larger merging time than a binary galaxy system with 1:1 mass ratio. This
difference is due to the different evolution of the masses during the
interaction in both cases. For the case with a 1:10 mass ratio, the global mass
maximum is located at the end evolution, meaning that the second galaxy
increases its mass constantly. For the case with mass ratio 1:1, the global
maximum is located around $t=0.35$ Gy, causing a reduction of the merging time.
