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Astronomers have discovered a galaxy that forms stars 180 times faster than our galaxy galaxy,
observation through alma The telescope, one of the largest in the world, revealed a previously unknown superheated “star factory” that existed less than a billion years ago. big bang,
An international team of researchers analyzed light from the primitive Y1 galaxy, which took more than 13 billion years to reach Earth.
The discovery could help solve the long-standing mystery of how galaxies grew so rapidly in the early universe.
“We’re looking at a time when the universe was forming stars much faster than it is today,” said Tom Bax, a postdoctoral researcher at Chalmers University of Technology in Sweden, who led the research.
“Previous observations revealed the presence of [cosmic] dust in this galaxy, making it the most distant glowing dust ever observed.
“This led us to suspect that this galaxy might be running a different, extremely hot type of star factory. To make sure, we set out to measure its temperature.”
By measuring the temperature of the extremely hot cosmic dust, astronomers were able to confirm that it was an “extreme” star factory.
“Although this is the first time we’ve seen a galaxy like this, we think there may be many more out there,” said co-researcher Yoichi Tamura, an astronomer at Nagoya University in Japan. “Star factories like Y1 may have been common in the early universe.”
According to scientists, Y1 is forming stars at an “extreme rate” of 180 per year, which is unsustainable on cosmological scales. In contrast, the Milky Way produces only about one star per year.
“We don’t know how common such stages may have been in the early universe, so we want to see more examples of such star factories in the future,” Dr Bax said.
“We also plan to use ALMA’s high-resolution capabilities to take a closer look at how this galaxy works.”
Details of the discovery were reported in the Monthly Notices of the Royal Astronomical Society a paper Title ‘A hot ultraviolet infrared galaxy just 600 million years after the Big Bang’.