Webb Space Telescope Shows Early Universe Crackled With Bursts of Star Formation — Webb Also Continues To Uncov |
The James Webb Space Telescope’s JADES program is providing unprecedented insights into the early universe, discovering hundreds of ancient galaxies and unveiling complex patterns of star formation. The study points to young, hot stars in early galaxies as potentially driving the transition of the universe from opaque to transparent during the Epoch of Reionization.
As part of the JADES program, Endsley and his colleagues studied these galaxies to look for signatures of star formation – and found them in abundance. “Almost every single galaxy that we are finding shows these unusually strongsignatures indicating intense recent star formation. These early galaxies were very good at creating hot, massive stars,” said Endsley.
Credit: NASA, ESA, CSA, Brant Robertson , Ben Johnson , Sandro Tacchella , Marcia Rieke , Daniel Eisenstein , Alyssa Pagan Kevin Hainline of the University of Arizona in Tucson and his colleagues used Webb’s NIRCam instrument to obtain these measurements, called photometric redshifts, and identified more than 700 candidate galaxies that existed when the universe was between 370 million and 650 million years old. The sheer number of these galaxies was far beyond predictions from observations made before Webb’s launch.
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