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REBELS-25 is a massive star-forming rotating disc galaxy[1][2] at a redshift of 7.31.[3] It was discovered using the Atacama Large Millimeter/submillimeter Array (ALMA).[4][5] The findings were published in the Monthly Notices of the Royal Astronomical Society. It existed just 700 million years after the Big Bang [6][7] The discovery is not only a record-breaker but another piece of mounting evidence, thanks to the James Webb Space Telescope, that suggests cosmologists need to revise their previous notions about galaxy evolution.[8]
It is very complex for such an ancient galaxy: the researchers discovered that it rotates (with the help of blueshift and redshift), and also shows traces of spiral arms as "modern" galaxies have, like the Milky Way.[9][10][11] Lucie Rowland, lead author of the REBELS-25 paper, said about this ancient galaxy (which doesn't fit the profile of an early galaxy): "Seeing a galaxy with such similarities to our own Milky Way, that is strongly rotation-dominated, challenges our understanding of how quickly galaxies in the early Universe evolve into the orderly galaxies of today's cosmos".[12]
References
edit- ^ Rowland, Lucie E.; et al. (24) (9 May 2024). "REBELS-25: Discovery of a dynamically cold disc galaxy at z = 7.31". Monthly Notices of the Royal Astronomical Society. arXiv:2405.06025. Bibcode:2024MNRAS.tmp.2235R. doi:10.1093/mnras/stae2217.
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: CS1 maint: bibcode (link) - ^ "Astronomers Discover Most Distant Rotating Disk Galaxy: REBELS-25 | Sci.News". Sci.News: Breaking Science News. 8 October 2024. Retrieved 11 October 2024.
- ^ "REBELS-25 is a dynamically cold disk galaxy, observations find". phys.org. Retrieved 11 October 2024.
- ^ "Astronomers' discovery of distant Milky Way-like galaxy challenges our theories of how cosmos evolved".
- ^ "Record-breaking ancient spinning galaxy challenges cosmic evolution theories". Space.com.
- ^ "Astronomers Discover Most Distant Rotating Disk Galaxy: REBELS-25 | Sci.News".
- ^ Rowland, Lucie E.; Hodge, Jacqueline; Bouwens, Rychard; Piña, Pavel E Mancera; Hygate, Alexander; Algera, Hiddo; Aravena, Manuel; Bowler, Rebecca; Da Cunha, Elisabete; Dayal, Pratika; Ferrara, Andrea; Herard-Demanche, Thomas; Inami, Hanae; Van Leeuwen, Ivana; De Looze, Ilse; Oesch, Pascal; Pallottini, Andrea; Phillips, Siân; Rybak, Matus; Schouws, Sander; Smit, Renske; Sommovigo, Laura; Stefanon, Mauro; Van Der Werf, Paul (2024). "REBELS-25: Discovery of a dynamically cold disc galaxy at z = 7.31". Monthly Notices of the Royal Astronomical Society. doi:10.1093/mnras/stae2217.
- ^ "Astronomers just found a galaxy way too advanced for its time". Mashable.
- ^ "Astronomers Discover Most Distant Rotating Disk Galaxy: REBELS-25 | Sci.News".
- ^ "Discovery of most distant rotating disk galaxy challenges current formation theories".
- ^ https://scitechdaily.com/astronomers-baffled-by-ancient-galaxy-that-mirrors-modern-milky-way/
- ^ "Monthly Notices of the Royal Astronomical Society". academic.oup.com. doi:10.1093/mnras/stae921. Retrieved 2024-10-18.