New FIU Research Challenges Long-held Theories on Galaxy Star Formation Shutdowns
A Paradigm Shift in Understanding Galaxy Evolution
For centuries, the collision of galaxies has been narrated as an epic cosmic drama, where chaos reigns and star formation comes to an abrupt stop. This narrative has long been the explanation for the stunted growth of galaxies. However, a recent study from Florida International University (FIU) is turning this established notion on its head. Researchers at FIU suggest that, contrary to popular belief, galaxy mergers may not be the primary reason why some galaxies stop producing stars altogether.
The Long-standing Belief and Its Reassessment
Astronomers have predominantly framed galaxy mergers as a crucial event leading to what is termed “quenching” – the process where a galaxy ceases to form new stars. The classic story is that when two galaxies collide, the gravitational forces involved funnel large amounts of gas into their centers, nourishing supermassive black holes. This process purportedly leads to a series of explosive reactions, emitting vast amounts of energy that heat or expel the gas necessary for star formation. For decades, this
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