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Identification and properties of intense star-forming galaxies at redshifts z >10

Robertson, BE, Tacchella, S, Johnson, BD, Hainline, K, Whitler, L, Eisenstein, DJ, Endsley, R, Rieke, M, Stark, DP, Alberts, S, Dressler, A, Egami, E, Hausen, R, Rieke, G, Shivaei, I, Williams, CC, Willmer, CNA, Arribas, S, Bonaventura, N, Bunker, A , Cameron, AJ, Carniani, S, Charlot, S, Chevallard, J, Curti, M, Curtis-Lake, E, D’Eugenio, F, Jakobsen, P, Looser, TJ, Lützgendorf, N, Maiolino, R, Maseda, MV, Rawle, T, Rix, HW, Smit, R, Übler, H, Willott, C, Witstok, J, Baum, S, Bhatawdekar, R, Boyett, K, Chen, Z, de Graaff, A, Florian, M, Helton, JM, Hviding, RE, Ji, Z, Kumari, N, Lyu, J, Nelson, E, Sandles, L, Saxena, A, Suess, KA, Sun, F, Topping, M and Wallace, IEB (2023) Identification and properties of intense star-forming galaxies at redshifts z >10. Nature Astronomy, 7 (5). pp. 611-621. ISSN 2397-3366

Identification and properties of intense star-forming galaxies at redshifts z > 10.pdf - Accepted Version

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Surveys with the James Webb Space Telescope (JWST) have discovered candidate galaxies in the first 400 Myr of cosmic time. Preliminary indications have suggested these candidate galaxies may be more massive and abundant than previously thought. However, without confirmed distances, their inferred properties remain uncertain. Here we identify four galaxies located in the JWST Advanced Deep Extragalactic Survey Near-Infrared Camera imaging with photometric redshifts z of roughly 10–13. These galaxies include the first redshift z > 12 systems discovered with distances spectroscopically confirmed by JWST in a companion paper. Using stellar population modelling, we find the galaxies typically contain 100 million solar masses in stars, in stellar populations that are less than 100 million years old. The moderate star-formation rates and compact sizes suggest elevated star-formation rate surface densities, a key indicator of their formation pathways. Taken together, these measurements show that the first galaxies contributing to cosmic reionization formed rapidly and with intense internal radiation fields.

Item Type: Article
Additional Information: This is a post-peer-review, precopyedit version of an article published in Nature Astronomy. The final authenticated version is available online at: http://dx.doi.org/10.1038/s41550-023-01921-1
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Astrophysics Research Institute
Publisher: Nature Research
SWORD Depositor: A Symplectic
Date Deposited: 16 Jun 2023 12:32
Last Modified: 11 Dec 2023 17:15
DOI or ID number: 10.1038/s41550-023-01921-1
URI: https://researchonline.ljmu.ac.uk/id/eprint/19886
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