GS-9209 is a massive quiescent galaxy[NB 1] that exists at redshift z=4.658 or 25 billion light years. It has a stellar mass of 3.8×1010 solar masses (7.6×1040 kg; 1.67×1041 lb) which is roughly 10 times the mass of the Milky Way galaxy.[1][2]
When the universe was around 800 million years old, the star formation rate (SFR) in the GS-9209 galaxy has undergone a sharp decrease. Most of the stars that exist in this galaxy has formed over a 200 million year period when the universe was 600-800 million years old.[1]
Notes
editReferences
edit- ^ a b Carnall, Adam C.; McLure, Ross J.; Dunlop, James S.; McLeod, Derek J.; Wild, Vivienne; Cullen, Fergus; Magee, Dan; Begley, Ryan; Cimatti, Andrea; Donnan, Callum T.; Hamadouche, Massissilia L.; Jewell, Sophie M.; Walker, Sam (July 2023). "A massive quiescent galaxy at redshift 4.658". Nature. 619 (7971): 716–719. arXiv:2301.11413. Bibcode:2023Natur.619..716C. doi:10.1038/s41586-023-06158-6. ISSN 1476-4687. PMC 10371866. PMID 37216978.
- ^ "Ancient galaxy's traits revealed using space telescope". The University of Edinburgh. 2023-05-25. Retrieved 2024-05-15.
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