The production of ionizing photons in UV-faint z ∼ 3–7 galaxies

Aims. The demographics of the production and escape of ionizing photons from UV-faint early galaxies is a key unknown that has hindered attempts to discover the primary drivers of reionization. With the advent of JWST, it is finally possible to observe the rest-frame optical nebular emission from in...

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Published in:Astronomy and astrophysics (Berlin) 2023-04, Vol.672, p.A186
Main Authors: Prieto-Lyon, Gonzalo, Strait, Victoria, Mason, Charlotte A., Brammer, Gabriel, Caminha, Gabriel B., Mercurio, Amata, Acebron, Ana, Bergamini, Pietro, Grillo, Claudio, Rosati, Piero, Vanzella, Eros, Castellano, Marco, Merlin, Emiliano, Paris, Diego, Boyett, Kristan, Calabrò, Antonello, Morishita, Takahiro, Mascia, Sara, Pentericci, Laura, Roberts-Borsani, Guido, Roy, Namrata, Treu, Tommaso, Vulcani, Benedetta
Format: Article
Language:English
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Summary:Aims. The demographics of the production and escape of ionizing photons from UV-faint early galaxies is a key unknown that has hindered attempts to discover the primary drivers of reionization. With the advent of JWST, it is finally possible to observe the rest-frame optical nebular emission from individual sub- L * z  > 3 galaxies to measure the production rate of ionizing photons, ξ ion . Methods. Here we study a sample of 370 z  ∼ 3 − 7 galaxies spanning −23 
ISSN:0004-6361
1432-0746
DOI:10.1051/0004-6361/202245532