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

Bibcode
2023Sci...380..416W
DOI
10.1126/science.adf5307
Williams, Hayley; Kelly, Patrick L.; Chen, Wenlei; Brammer, Gabriel; Zitrin, Adi; Treu, Tommaso; Scarlata, Claudia; Koekemoer, Anton M.; Oguri, Masamune; Lin, Yu-Heng; Diego, Jose M.; Nonino, Mario; Hjorth, Jens; Langeroodi, Danial; Broadhurst, Tom; Rogers, Noah; Perez-Fournon, Ismael; Foley, Ryan J.; Jha, Saurabh; Filippenko, Alexei V.; Strolger, Lou; Pierel, Justin; Poidevin, Frederick; Yang, Lilan
Bibliographical reference

Science

Advertised on:
4
2023
Journal
Science
Number of authors
24
IAC number of authors
2
Citations
71
Refereed citations
50
Description
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.
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Full-sky map showing the spatial distribution of the primary anisotropies of the Cosmic Microwave Background (generated 380,000 years after the Big Bang) derived from observations of the Planck satellite
Anisotropy of the Cosmic Microwave Background

The general goal of this project is to determine and characterize the spatial and spectral variations in the temperature and polarisation of the Cosmic Microwave Background in angular scales from several arcminutes to several degrees. The primordial matter density fluctuations which originated the structure in the matter distribution of the present

Rafael
Rebolo López
In progress
Project Image
Formation and Evolution of Galaxies: Observations in Infrared and other Wavelengths

This IAC research group carries out several extragalactic projects in different spectral ranges, using space as well as ground-based telescopes, to study the cosmological evolution of galaxies and the origin of nuclear activity in active galaxies. The group is a member of the international consortium which built the SPIRE instrument for the

Ismael
Pérez Fournon
In progress
Type
Refereed
Cosmology & Astroparticles (CYA, CTA)
Formation & Evolution of Galaxies (FYEG)

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