Dunlop, J. S.Bowler, R. A. A.Jarvis, M. J.2021-02-112021-02-112020Dunlop, J. S. et al. (2020). A lack of evolution in the very bright end of the galaxy luminosity function from z 8 to 10. Monthly Notices of the Royal Astronomical Society, 493(2), 2059–20841365-2966https://doi.org/10.1093/mnras/staa313http://hdl.handle.net/10566/5897ABSTRACT We utilize deep near-infrared survey data from the UltraVISTA fourth data release (DR4) and the VIDEO survey, in combination with overlapping optical and Spitzer data, to search for bright star-forming galaxies at z ≳ 7.5. Using a full photometric redshift fitting analysis applied to the ∼6 deg2 of imaging searched, we find 27 Lyman break galaxies (LBGs), including 20 new sources, with best-fitting photometric redshifts in the range 7.4 < z < 9.1. From this sample, we derive the rest-frame UV luminosity function at z = 8 and z = 9 out to extremely bright UV magnitudes (MUV ≃ −23) for the first time.enGalaxies: evolutionGalaxies: formationGalaxies: high-redshiftBright star-forming galaxiesPhotometric redshiftArticle