Astronomers find a strange galaxy In the early days of the universe When the light from the dust and gas around the star shines brighter than the star’s light, And maybe it was a galaxy that was halfway through a first generation of star formation before it grew into the galaxy we know today.
The galaxy GS-NDG-9422 can appear as a bright hazy spot. in the deep space images of the James Webb telescope, but data from the spectral analysis of galaxies that have existed for 12.8 billion years have led astronomers We saw features of light data that have never been seen before.
Alex Cameron, lead researcher from the University of Oxford, said: “After seeing the astronomical data of the galaxy, he said. My first thought was, ‘This is very strange’, which is exactly what James Webb’s camera was designed to detect. like all new phenomena in the early days of the universe That helps us to understand how this whole universe began. “
After consultation with astrophysicist Harley Katz who has created a model to simulate cosmic dust gas being heated by a massive star to the point where the dust and gas glow brighter than the star. This is similar to the data obtained by the James Webb telescope.
Astronomers found that there are stars in galaxy GS-NDG-9422 with temperatures exceeding 80,000 degrees Celsius, hotter than massive stars in local galaxies near Earth, which have temperatures of around 80,000 degrees Celsius. 40,000-50,000 degrees Celsius
The researchers suspect that the galaxy is undergoing rapid star formation. This causes the dust and gas in the galaxy to be continuously bombarded by photons from massive stars. As a result, these gaseous dust particles are brighter than the light from the star. This is an environment that astronomers predict is similar to Population III stars, or the first generation of stars born in the universe.
However, Katz said, “This galaxy does not have Population III stars because data from the James Webb telescope showed that it is more chemically complex than that.” But the stars there are different from the stars we are used to. This could be the starting point for understanding how galaxies moved from the earliest stages to the galaxies we know today.”
This is because GS-NDG-9422 is the first galaxy discovered in this area. This leaves many questions for astronomers still waiting to be answered, such as whether this type of environment is normal or not. How much information from this galaxy can help us understand how galaxies grow at earlier times? The discovery team has been trying to find more galaxies of this type. To increase our understanding of what happened to the universe in the first 1 billion years after the Big Bang.
Cameron said: “This is a very exciting time. The James Webb Space Telescope allows us to explore previously unexplored areas of the universe. Putting us at the beginning of new discoveries. and you will understand this universe better than ever before. “
picture: NASA, ESA, CSA, STScI, A. Cameron (University of Oxford)
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