BEACON TRANSCRIPT – Scientists have always assumed that supermassive black holes stand at the center of galaxies and ease the formation of new stars. A recent study decided to explore the relation between galaxy formation and black holes, and discovered a less active hole created more stars than a supermassive one.
Star formation and black holes are strongly related
A galaxy is surrounded by plenty of cold gases, remains from other stars and cosmic formations. Researchers know these gases are absorbed at the center of a galaxy by black holes, driving the creation of new stars. Then, they identified a strong correlation between the cooling rate of these gases, and how big the black hole at the center of their galaxy was.
However, they were interested to see how various cooling rates evolved all around the universe. This way, they could look at star formation over a longer period of time. What they observed was the fact that stars came into being more quickly and effectively in those galaxies where a supermassive black hole was placed right at the center.
Supermassive black holes eventually quench all the stars away from a galaxy
This correlation was present across all types of stars and galaxies. Wherever there were black holes, the cooling rate of the gases was more intense, and the star formation occurred more quickly. The findings clarified that supermassive black holes slow down star creation and eventually stop it. Also, this added up to older ones, which indicated that less active holes were more productive the more active ones.
Any kind of black hole placed somewhere in the galaxy can eat up the dust remains and produce a new celestial body. However, its placement, size, amount of mass, and degree of activity influence its actual productivity. Some galaxies produce more stars, and this is given mostly by the properties of its black hole.