Description
Bars have been active and key actors in secular evolution, gas re-distribution and star formation in disc galaxies for at least 10 Gyr. While bars have been extensively studied via observations, models and simulations, we still do not know or even understand how those emerging tumbling structures truly impact the building and evolution of structures.
We have recently provided new strong evidence for a physically motivated change of regime between low and high-mass galaxies based on a unique grid of hydro-dynamical simulations and an exquisite multi-wavelength dataset (HST, JWST, MUSE/VLT, ALMA, Astrosat, VLA, Meerkat).
In this talk, I will illustrate those results by demonstrating how central mass concentrations build up via bar-driven inflows, how star formation can be either prevented or boosted and how it depends on relative locations within the disk, and how the stellar mass dependent phase transition emerges from the relative balance between feedback and gravity. I will provide a holistic view of such processes (including a connection to our Milky Way), leveraging on our simulations and observations (specifically focusing on ALMA, JWST and HST), further emphasising their important influence on the evolution of discs since their advent, something that may not usually be captured or considered in cosmological context studies.
