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 .