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This research aims to analyze the UV luminosity function of faint galaxies during the epoch of reionization and its effects on galaxy formation models.

August 13, 2026The Open Journal of AstrophysicsOpen Access

A GLIMPSE of the 99%: a census of the faintest galaxies during the epoch of reionization and its implications for galaxy formation models

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HAHakim Atek ICIryna ChemerynskaCentre National de la Recherche Scientifique LFLukas J. FurtakBen-Gurion University of the Negev

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Implication

Comprehensive study examines galaxy UV luminosity function and its implications for galaxy formation models, revealing significant insights.

Key Points

This research aims to analyze the UV luminosity function of faint galaxies during the epoch of reionization and its effects on galaxy formation models.
Utilized deep JWST observations from the GLIMPSE survey.
Employed gravitational lensing to probe the UV luminosity function to a depth of -12 mag.
Incorporated rigorous uncertainty frameworks for statistical and systematic lensing uncertainties.
No evidence of a turnover in the UV luminosity function down to -12.3 mag.
Determined faint-end slope of α = -1.98 ± 0.05 +0.06, indicating the UV luminosity function continues to steeply rise.
Derived comoving ionizing emissivity at z = 7 of approximately 50.85, suggesting faint galaxies dominate the ionizing budget.

Cite This Study

Atek et al. (2026) studied this question.

synapsesocial.com/papers/6a7d768a2b0e0cff3f63ff34 https://doi.org/10.33232/001c.166816

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Implication

Comprehensive study examines galaxy UV luminosity function and its implications for galaxy formation models, revealing significant insights.

A GLIMPSE of the 99%: a census of the faintest galaxies during the epoch of reionization and its implications for galaxy formation models

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Implication

Key Points

Cite This Study

A GLIMPSE of the 99%: a census of the faintest galaxies during the epoch of reionization and its implications for galaxy formation models

Discussion

Member takes

Implication

Key Points

Cite This Study

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