A recently quenched galaxy 700 million years after the Big Bang

Tobias J. Looser (), Francesco D’Eugenio, Roberto Maiolino, Joris Witstok, Lester Sandles, Emma Curtis-Lake, Jacopo Chevallard, Sandro Tacchella, Benjamin D. Johnson, William M. Baker, Katherine A. Suess, Stefano Carniani, Pierre Ferruit, Santiago Arribas, Nina Bonaventura, Andrew J. Bunker, Alex J. Cameron, Stephane Charlot, Mirko Curti, Anna Graaff, Michael V. Maseda, Tim Rawle, Hans-Walter Rix, Bruno Rodríguez Pino, Renske Smit, Hannah Übler, Chris Willott, Stacey Alberts, Eiichi Egami, Daniel J. Eisenstein, Ryan Endsley, Ryan Hausen, Marcia Rieke, Brant Robertson, Irene Shivaei, Christina C. Williams, Kristan Boyett, Zuyi Chen, Zhiyuan Ji, Gareth C. Jones, Nimisha Kumari, Erica Nelson, Michele Perna, Aayush Saxena and Jan Scholtz
Additional contact information
Tobias J. Looser: University of Cambridge
Francesco D’Eugenio: University of Cambridge
Roberto Maiolino: University of Cambridge
Joris Witstok: University of Cambridge
Lester Sandles: University of Cambridge
Emma Curtis-Lake: University of Hertfordshire
Jacopo Chevallard: University of Oxford
Sandro Tacchella: University of Cambridge
Benjamin D. Johnson: Center for Astrophysics | Harvard & Smithsonian
William M. Baker: University of Cambridge
Katherine A. Suess: University of California, Santa Cruz
Stefano Carniani: Scuola Normale Superiore
Pierre Ferruit: European Space Agency (ESA)
Santiago Arribas: Spanish National Research Council (CSIC)–National Institute of Aerospace Technology (INTA)
Nina Bonaventura: Cosmic Dawn Center (DAWN)
Andrew J. Bunker: University of Oxford
Alex J. Cameron: University of Oxford
Stephane Charlot: Institut d’Astrophysique de Paris
Mirko Curti: University of Cambridge
Anna Graaff: Max-Planck-Institut für Astronomie
Michael V. Maseda: University of Wisconsin-Madison
Tim Rawle: Space Telescope Science Institute (STScI)
Hans-Walter Rix: Max-Planck-Institut für Astronomie
Bruno Rodríguez Pino: Spanish National Research Council (CSIC)–National Institute of Aerospace Technology (INTA)
Renske Smit: Liverpool John Moores University
Hannah Übler: University of Cambridge
Chris Willott: NRC Herzberg
Stacey Alberts: University of Arizona
Eiichi Egami: University of Arizona
Daniel J. Eisenstein: Center for Astrophysics | Harvard & Smithsonian
Ryan Endsley: University of Texas at Austin
Ryan Hausen: The Johns Hopkins University
Marcia Rieke: University of Arizona
Brant Robertson: University of California, Santa Cruz
Irene Shivaei: University of Arizona
Christina C. Williams: NSF’s National Optical-Infrared Astronomy Research Laboratory (NOIRLab)
Kristan Boyett: University of Melbourne
Zuyi Chen: University of Arizona
Zhiyuan Ji: University of Arizona
Gareth C. Jones: University of Oxford
Nimisha Kumari: Space Telescope Science Institute
Erica Nelson: University of Colorado Boulder
Michele Perna: Spanish National Research Council (CSIC)–National Institute of Aerospace Technology (INTA)
Aayush Saxena: University College London
Jan Scholtz: University of Cambridge

Nature, 2024, vol. 629, issue 8010, 53-57

Abstract: Abstract Local and low-redshift (z 1010 M⊙) and relatively old. Here we report a (mini-)quenched galaxy at z = 7.3, when the Universe was only 700 Myr old. The JWST/NIRSpec spectrum is very blue (U–V = 0.16 ± 0.03 mag) but exhibits a Balmer break and no nebular emission lines. The galaxy experienced a short starburst followed by rapid quenching; its stellar mass (4–6 × 108 M⊙) falls in a range that is sensitive to various feedback mechanisms, which can result in perhaps only temporary quenching.

Date: 2024
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DOI: 10.1038/s41586-024-07227-0

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