False-color JWST image of a small fraction of the GOODS South field, with the galaxy JADES-GS-z7-01-QU highlighted Credit: JADES Collaboration
So, when the galaxy JADES-GS-z7-01-QU showed up in a JWST observation, it didn’t exhibit much evidence of ongoing star formation. It’s in what astronomers refer to as a “quenched” state and looks like star formation started and quickly stopped. Figuring out why this happened to the young galaxy is an important step in cosmology.
That’s not surprising—although astronomers aren’t sure why it stopped. Clearly, it ran out of gas. Maybe. The black hole’s rapidly moving winds and jets could also have shoved a great deal of the star-birth material completely out of the galaxy. It’s also possible that the very rapid pace of star formation that JADES-GS-z7-01-QU experienced simply used up the supply. That’s not impossible, according to Looser.
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