2023-09-28 17:25:47
The graphic shows the two images (Image A and Image B) of the merged galaxy taken by JWST. – YOSHI ASADA, MARCIN SAWICKI/CANUCS COLLABORATION
MADRID, 28 Sep. (EUROPA PRESS) –
The Webb Space Telescope (JWST) shows evidence that a merger event early in the history of our universe explains the intensive growth of a ‘baby galaxy’.
The two smaller galaxies involved in the merger, called ELG1 and ELG2, can also be seen in the JWST images, helping the team behind the discovery, led by Kyoto University, to better understand how galaxies form.
“Due to the gravitational lensing or Einstein warp effect applied through JWST, we can see the galaxy twice, like a mirage in the desert, because the light comes to us from two slightly different directions,” he says. it’s a statement co-author Marcin Sawicki of Saint Mary’s University in Nova Scotia.
“By studying the newborn galaxy, we learned that when smaller subcomponents, like ELG1 and ELG2, collide and merge, galaxies can experience intense periods of star formation growth“explains lead author Yoshi Asada from Kyoto University.
The JWST data, obtained by the international team, revealed two images of merging galaxiesproduced by the bending of light around the mass concentration of the galaxy cluster MACS 0417 that is between observers and the pair of merging galaxies.
Evidence for the formation of hot young stars within young galaxies is the imaged glow caused by ionized hydrogen gas.
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