Ionizing Photon Production Efficiencies and Chemical Abundances at Cosmic Dawn Revealed by Ultradeep Rest-frame Optical Spectroscopy of JADES-GS-z14-0

JWST has discovered an early period of galaxy formation that was more vigorous than expected, which has challenged our understanding of the early Universe. In this work, we present the longest spectroscopic integration ever acquired by JWST/MIRI ( t _obs  ≈ 51 hr). This spectrum covers the brightest...

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Autori principali:	Jakob M. Helton, Jane E. Morrison, Kevin N. Hainline, Francesco D’Eugenio, George H. Rieke, Stacey Alberts, Stefano Carniani, Joel Leja, Yijia Li, Pierluigi Rinaldi, Jan Scholtz, Meredith Stone, Christopher N. A. Willmer, Zihao Wu, William M. Baker, Andrew J. Bunker, Stephane Charlot, Jacopo Chevallard, Nikko J. Cleri, Mirko Curti, Emma Curtis-Lake, Eiichi Egami, Daniel J. Eisenstein, Peter Jakobsen, Zhiyuan Ji, Benjamin D. Johnson, Nimisha Kumari, Xiaojing Lin, Jianwei Lyu, Roberto Maiolino, Michael Maseda, Pablo G. Pérez-González, Marcia J. Rieke, Brant Robertson, Aayush Saxena, Fengwu Sun, Sandro Tacchella, Hannah Übler, Giacomo Venturi, Christina C. Williams, Chris Willott, Joris Witstok, Yongda Zhu
Natura:	Artigo
Lingua:	Inglês
Pubblicazione:	IOP Publishing 2026-01-01
Serie:	The Astrophysical Journal Letters
Soggetti:	Chemical abundances Emission line galaxies Galaxy evolution Galaxy formation High-redshift galaxies Infrared spectroscopy
Accesso online:	https://doi.org/10.3847/2041-8213/ae7446
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