Understanding star-forming galaxies
June 5, 2017
An optical image of the galaxy NGC2718. Astronomers studying the star formation activity in this and other spiral galaxies have confirmed and refined the close correlation, seen among these galaxies and subregions within them, between the …more
The more stars a typical spiral galaxy contains, the faster it makes new ones. Astronomers call this relatively tight correlation the "galaxy main sequence." The main sequence might be due simply to the fact that galaxies with more stars have more of everything, including material for making new stars. Alternatively, the mechanisms making new stars could be more efficient in some galaxies, or it could be some combination of these and other possibilities.
Read more at:
https://phys.org/news/2017-06-star-forming-galaxies.html#jCp
