Galaxy in the constellation Sextans
REBELS-25 Observation data (J2000 epoch ) Constellation Sextans Right ascension 10h 00m 32.32s Declination +01° 44′ 31.22″ Redshift ± 0.0001Heliocentric radial velocity 2,190,434 km/s (1,361,073 mi/s) Galactocentric velocity 2,190,289 km/s (1,360,982 mi/s) Distance 13 billion ly (4.0 billion pc ) (light travel distance)billion ly (9.2 billion pc )billion ly (72 billion pc ) Characteristics Mass × 109 M ☉ Size 16 kly (4.9 kpc ) Other designations COSMOS2020 0336101, COSMOS2020 Farmer 499535, [SLB2017] UVISTA-Y-3, [BJD2020] UVISTA-0213
REBELS-25 is a massive, star-forming rotating discgalaxy [ 1] [ 2] redshift of 7.31.[ 3] Atacama Large Millimeter/submillimeter Array (ALMA) ,[ 4] [ 5] Royal Astronomical Society . REBELS-25 existed just 700 million years after the Big Bang.[ 6] [ 7] cosmologists need to revise their previous notions ongalactic evolution .[ 8]
REBELS-25 is very complex compared to what was expected for a galaxy of its age: researchers discovered that it rotates (with the help of blueshift andredshift ), and also shows traces of spiral arms as "modern" galaxies, like theMilky Way , has.[ 9] [ 10] [ 11] [ 12]
^ 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 .535 (3):2068– 2091.arXiv :2405.06025 Bibcode :2024MNRAS.535.2068R .doi :10.1093/mnras/stae2217 ^ "Astronomers Discover Most Distant Rotating Disk Galaxy: REBELS-25 | Sci.News" .Sci.News: Breaking Science News . 8 October 2024. Retrieved11 October 2024 .^ "REBELS-25 is a dynamically cold disk galaxy, observations find" .phys.org . Retrieved11 October 2024 .^ "Astronomers' discovery of distant Milky Way-like galaxy challenges our theories of how cosmos evolved" . 16 October 2024.^ "Record-breaking ancient spinning galaxy challenges cosmic evolution theories" .Space.com ^ "Astronomers Discover Most Distant Rotating Disk Galaxy: REBELS-25 | Sci.News" . 8 October 2024.^ 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 atz = 7.31" .Monthly Notices of the Royal Astronomical Society .535 (3):2068– 2091.Bibcode :2024MNRAS.535.2068R .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" . 8 October 2024.^ "Discovery of most distant rotating disk galaxy challenges current formation theories" .^ https://scitechdaily.com/astronomers-baffled-by-ancient-galaxy-that-mirrors-modern-milky-way/ ^ Le Conte, Zoe A.; Gadotti, Dimitri A.; Ferreira, Leonardo; Conselice, Christopher J.; De Sá-Freitas, Camila; Kim, Taehyun; Neumann, Justus; Fragkoudi, Francesca; Athanassoula, E.; Adams, Nathan J. (11 May 2024)."Monthly Notices of the Royal Astronomical Society" .academic.oup.com .530 (2):1984– 2000.arXiv :2309.10038 doi :10.1093/mnras/stae921 . Retrieved2024-10-18 .
