![[사이테크+] “Three galaxies that fashioned within the early universe 13.4 billion years in the past have been captured” – Yonhap Information](https://i0.wp.com/img5.yna.co.kr/etc/inner/KR/2024/05/24/AKR20240524110100017_01_i_P4.jpg?fit=%2C&ssl=1 "[사이테크+] “Three galaxies that fashioned within the early universe 13.4 billion years in the past have been captured” – Yonhap Information")
Supply time2024-05-25 06:00
Worldwide analysis staff: “Stars kind in impartial hydrogen gasoline 400 to 600 million years after the Large Bang”
(Seoul = Yonhap Information) Reporter Jooyoung Lee = NASA’s James Webb Area Telescope (JWST) found that younger stars have been fashioned when chilly impartial atomic gasoline coalesced within the early universe, lower than 600 million years after the Large Bang was triggered.
Occupied with galaxies forming within the early universe
The formation of galaxies in a universe the place clear and opaque gasoline was blended, simply tons of of hundreds of thousands of years after the Large Bang. Observational knowledge from NASA’s James Webb Area Telescope (JWST) exhibits that chilly impartial hydrogen gasoline is being dragged into the galaxy. [NASA, ESA, CSA, Joseph Olmsted (STScI) 제공. 재판매 및 DB 금지]
A global analysis staff led by Professor Kasper Heinz from the Niels Bohr Institute on the College of Copenhagen, Denmark, analyzed JWST observational knowledge within the scientific journal Science on the twenty fifth and located that chilly impartial gasoline , principally hydrogen, accrued within the universe 13.3 to 13.4 billion years in the past and lively stars.
Professor Heinz stated, “Beforehand, JWST confirmed the early galaxy on the finish of the evolutionary stage, however this time, we instantly noticed the delivery of a galaxy, that’s, the primary star system fashioned within the universe.”
On this examine, the analysis staff intently analyzed JWST Close to-Infrared Spectrograph (NIRSpec) observational knowledge on 12 galaxies within the early universe positioned greater than 13 billion light-years away.
Three galaxies have been actively forming stars 13.3 to 13.4 billion years in the past, utilizing a mannequin that examines how galaxy mild is absorbed by impartial gasoline in and round galaxies to differentiate gasoline from galaxies which is newly fashioned from different gases which were found.
These galaxies seem like surrounded by chilly, impartial gasoline containing solely hydrogen and helium, the earliest components within the universe.
The analysis staff stated that JWST’s near-infrared commentary gear was very delicate and was capable of detect an unusually great amount of chilly impartial atomic gasoline round galaxies, and that this gasoline could have been the gasoline for create new stars within the galaxy.
Instantly after the Large Bang, the universe was a big, opaque mass of gasoline made up of hydrogen atoms, and the gasoline between stars and galaxies was opaque, in contrast to house a is now filled with shining stars.
All of the gasoline within the universe turned utterly clear only a billion years after the Large Bang, and the celebs of the galaxy added to the transparency by heating and absorbing the encircling gasoline.
Professor Heinz stated, “The early galaxies found are glowing islands in a sea of impartial and opaque gasoline,” and added, “With out JWST, it might have been inconceivable observe early illnesses or receive details about the galaxy formation course of”.
Professor Darach Watson, co-author of the paper, stated, “Evaluation of the JWST knowledge confirmed that almost all of those galaxies are made up of younger stars. to create stars.”
◆ 출처 : Science, Kasper E. Heintz et al., ‘Robust damped Lyman-α absorption in younger star-forming galaxies at redshifts 9 to 11’, www.science.org/doi/10.1126/science.adj0343
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2024/05/25 06:00 Despatched
