A magnified compact galaxy at redshift 9.51 with strong nebular emission lines.
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| Title: | A magnified compact galaxy at redshift 9.51 with strong nebular emission lines. |
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| Authors: | 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. |
| Source: | Science (pre-March 2025). 4/28/2023, Vol. 380 Issue 6643, p416-420. 5p. 4 Diagrams, 1 Chart. |
| Subjects: | Interstellar medium, Gravitational lenses, Redshift, Ionized gases, Star formation, Ultraviolet radiation, Galactic redshift |
| 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 16:2þ4:6 -7:2 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. [ABSTRACT FROM AUTHOR] |
| Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
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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 16:2þ4:6 -7:2 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. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 00368075 |
| DOI: | 10.1126/science.adf5307 |
