Outflows in the Early Universe: Neutral gas Absorption in Galaxies at z > 3 from low-resolution JWST Spectroscopy

arXiv:2607.20606 · astro-ph.GA · Submitted 2026-07-22 · Read on arXiv

Matteo Sapori, Sirio Belli, Letizia Bugiani, Amir H. Khoram, Caterina Liboni, Gabriel Maheson, Gabriel Brammer, Rebecca Davies, Pratika Dayal, Anna de Graaff, Joel Leja, Rohan Naidu, Pascal Oesch, Stefano Sotira, Sandro Tacchella, Bingjie Wang, Katherine E. Whitaker

astro-ph.GA

Submitted: 2026-07-22

Comments: 16 pages, 11 figures, 2 tables

Project page: https://dawn-cph.github.io/dja/index.htmlhttp://www.astrodeep.eu

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• AGN — 28× in this paper · explained in 1 episode
• Dust Attenuation — 8× in this paper · explained in 2 episodes
• Dawn JWST Archive — 4× in this paper
• Metallicity — 3× in this paper · explained in 3 episodes
• Abundance — 2× in this paper · explained in 1 episode
• Consistency — 2× in this paper · explained in 3 episodes
• Flexible Stellar Population Synthesis — 2× in this paper
• James Webb Space Telescope — 2× in this paper
• Population Synthesis — 2× in this paper · explained in 2 episodes
• AGN Feedback — 1× in this paper · explained in 1 episode
• Active Galactic Nuclei (AGN) — 1× in this paper · explained in 1 episode
• Calibration — 1× in this paper · explained in 7 episodes
• Fidelity — 1× in this paper · explained in 2 episodes
• Galaxy Quenching — 1× in this paper · explained in 3 episodes
• Self-consistency — 1× in this paper · explained in 2 episodes
• Spectral Energy Distribution — 1× in this paper
• Star-Forming Main Sequence — 1× in this paper
• Trace — 1× in this paper · explained in 2 episodes

Sources

• The Blue Jay Survey: Deep JWST Spectroscopy for a Representative Sample of Galaxies at Cosmic Noon
• SpectRes: A Fast Spectral Resampling Tool in Python
• Little Red Dots host Black Hole Stars: A unified family of gas-reddened AGN revealed by JWST/NIRSpec spectroscopy
• A Census of Na D-traced neutral ISM and outflows at 0.6<z<4
• The JWST EXCELS survey: Outflows in 1.5 < z < 5 quiescent and recently quenched galaxies are likely relics from episodic AGN activity

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