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  5. A magnified compact galaxy at redshift 9.51 with strong nebular emission lines

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Article
en
2023

A magnified compact galaxy at redshift 9.51 with strong nebular emission lines

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en
2023
Vol 380 (6643)
Vol. 380
DOI: 10.1126/science.adf5307

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Alexei V Filippenko
Alexei V Filippenko

University of California, Berkeley

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Hayley Williams
Patrick L. Kelly
Wenlei Chen
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Abstract

Ultraviolet light from early galaxies is thought to have ionized gas in the intergalactic medium. However, there are few observational constraints on this epoch because of the faintness of those galaxies and the redshift of their optical light into the infrared. We report the observation, in JWST imaging, of a distant galaxy that is magnified by gravitational lensing. JWST spectroscopy of the galaxy, at rest-frame optical wavelengths, detects strong nebular emission lines that are attributable to oxygen and hydrogen. The measured redshift is z = 9.51 ± 0.01, corresponding to 510 million years after the Big Bang. The galaxy has a radius of 16.2 − 7.2 + 4.6 parsecs, which is substantially more compact than galaxies with equivalent luminosity at z ~ 6 to 8, leading to a high star formation rate surface density.

How to cite this publication

Hayley Williams, Patrick L. Kelly, Wenlei Chen, Gabriel Brammer, Adi Zitrin, Tommaso Treu, Claudia Scarlata, Anton M. Koekemoer, Masamune Oguri, Yu-Heng Lin, J. M. Diego, M. Nonino, J. Hjorth, Danial Langeroodi, Tom Broadhurst, Noah S. J. Rogers, I. Pérez‐Fournon, R. J. Foley, Saurabh W. Jha, Alexei V Filippenko, Lou Strolger, Justin Pierel, F. Poidevin, Lilan Yang (2023). A magnified compact galaxy at redshift 9.51 with strong nebular emission lines. , 380(6643), DOI: https://doi.org/10.1126/science.adf5307.

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Publication Details

Type

Article

Year

2023

Authors

24

Datasets

0

Total Files

0

Language

en

DOI

https://doi.org/10.1126/science.adf5307

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