Lopez, Paula Denise
Argentina IALP
Analysis of disc instabilities in barred galaxies using the TNG50 simulation
Bars are very common structures of galaxies, observed in a large fraction of disc galaxies. However, the underlying mechanisms that determine why certain galaxies develop bar structures while others of comparable mass and morphology do not are not fully understood, remaining a subject of debate.
The aim of this work is to identify the physical processes involved in the formation of bars, using the TNG50 simulation. For the barred galaxies, we calculate the bar strength and formation time and we assess the ability of different dynamical processes, such as interactions and fusions with nearby galaxies (external processes), to give place to the formation of bars. Finally, we evaluate the efficiency of different instability criteria in predicting bar formation.