Journey of galaxies through large scale structures*

There exists a complex relationship between galaxies and their surroundings. It has been shown that certain galaxy shapes are dominant in different large-scale cosmic environments, such as the tendency of elliptical galaxies to dominate in clusters. Furthermore, previous studies suggest that these galaxies may undergo a morphological transition as they pass from one large-scale environment to the next. Specifically, this evolution may be influenced by the type of galaxy-galaxy interactions (fly-bys, mergers) and galaxy-medium interactions (collision with gas, disruption by collective dark matter potential). For this reason, it is interesting to know where galaxies are located throughout time. In this talk, I will present our simulation work in examining the history of galaxies as they move through different cosmic environments. In particular, we identify large-scale structures and galaxy trajectories within simulations produced by a modified SPH Gadget 2 code, as well as the publicly available IllustrisTNG data sets.