Posted2024.05.25 06:00
Edit2024.05.25 06:00
Worldwide analysis group: “Stars type in impartial hydrogen 400 to 600 million years after the Huge Bang”
NASA’s James Webb House Telescope (JWST) captured galaxies within the early universe, lower than 600 million years after the Huge Bang, the place chilly, impartial atomic fuel coalesced and younger stars have been forming. A world analysis group led by Professor Kasper Heinz from the Niels Bohr Institute on the College of Copenhagen, Denmark, analyzed information from the JWST statement within the scientific journal Science on the twenty fifth and located that chilly impartial fuel, primarily hydrogen, has agglomerated within the universe 13.3 to 13.4 billion years in the past and the celebrities have been energetic They introduced that that they had found three galaxies that have been forming.
Professor Heinz mentioned: “Beforehand, JWST confirmed the primordial galaxy on the superior stage of evolution, however this time we immediately witnessed the delivery of a galaxy, that’s, the creation of the primary star system within the universe.”
On this research, the analysis group carefully analyzed JWST Close to-Infrared Spectrograph (NIRSpec) statement information on 12 galaxies within the early universe situated greater than 13 billion light-years away. Three galaxies have been actively forming stars between 13.3 and 13.4 billion years in the past, utilizing a mannequin that analyzes how mild from galaxies is absorbed by impartial fuel in and round galaxies to tell apart fuel from newly forming galaxies from different fuel discovered.
These galaxies look like surrounded by chilly, impartial fuel consisting solely of hydrogen and helium, the primary components of the universe.
The analysis group mentioned that JWST’s near-infrared statement tools was very delicate and was in a position to detect an unusually great amount of chilly impartial atomic fuel surrounding galaxies, and that this fuel could have been the gasoline for the formation of recent stars within the galaxy. Instantly after the Huge Bang, the universe was an enormous opaque mass of fuel composed of hydrogen atoms, and the fuel between stars and galaxies was opaque, in contrast to right this moment’s house filled with twinkling stars.
The fuel in the complete universe grew to become utterly clear solely a billion years after the Huge Bang, and the celebrities within the galaxy contributed to the transparency by heating and ionizing the encircling fuel.
Professor Heinz mentioned: “The primary found galaxies are like glittering islands in a sea of opaque, impartial fuel,” and added: “With out JWST, it will have been unattainable to watch the primary galaxies or acquire insights into the method of galaxy formation. “. Professor Darach Watson, co-author of the paper, mentioned: “Evaluation of the JWST information confirmed that almost all of those galaxies are composed of younger stars. The truth that their environment are like large reservoirs of fuel suggests that almost all galaxies haven’t had sufficient time to type stars.”
◆ 출처: Science, Kasper E. Heintz et al., ‘Sturdy damping of Lyman-α absorption in younger star-forming galaxies at redshift 9 to 11’, www.science.org/doi/10.1126/science.adj0343
/yunhap information
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