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

By Brant Robertson, S. Tacchella, B. Johnson, K. Hainline, L. Whitler, D. Eisenstein, R. Endsley, M. Rieke, D. Stark, S. Alberts and 84 more. Nature Astronomy, 2022

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The JWST Advanced Deep Extragalactic Survey using NIRCam to find the earliest galaxies reveals the size and star formation rates of four extreme redshift ( z > 10) galaxies of the distant Universe. 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.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/04547b7b3fd006daff33de6162f7bec0497fb84e

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Citations in the corpus

JADES Initial Data Release for the Hubble Ultra Deep Field: Revealing the Faint Infrared Sky with Deep JWST NIRCam Imaging (2023, background): “The ﬁ rst year of the mission has revealed high-redshift galaxies as never before possible ( Robertson et al. 2023; Curtis-Lake et al. 2023 ) .”
A Census of Photometrically Selected Little Red Dots at 4 < z < 9 in JWST Blank Fields (2024, background): “…of more and farther galaxies (e.g. Adams et al. 2023; Atek et al. 2023; Austin et al. 2023; Bradley et al. 2023; Casey et al. 2023; Finkelstein et al. 2023; Naidu et al. 2022; Robertson et al. 2023), some of them spectroscopically confirmed beyond z > 13 (Curtis-Lake et al. 2023; Wang et al. 2023).”
JWST Census for the Mass–Metallicity Star Formation Relations at z = 4–10 with Self-consistent Flux Calibration and Proper Metallicity Calibrators (2023, background): “…Time ( DDT ) programs ( Heintz et al. 2022; Wang et al. 2022; Langeroodi et al. 2022; Williams et al. 2023 ) , and the Guaranteed Time Observations of JADES ( Bunker et al. 2023; Cameron et al. 2023b; Curtis-Lake et al. 2023; Robertson et al. 2023; Saxena et al. 2023; Curti et al. 2023b ) .”