Author

C. Prieto-Jiménez

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Preprint Oct 2026

PRISMS GHZ8: Evidence for a Young Burst and Potential Merger Activity at z=10.23

UV-bright galaxies in the early Universe provide important constraints on the rapid build-up of stellar mass and the sources responsible for cosmic reionization. However, the physical processes that drive their high UV luminosities remain unclear. Here we report JWST/MIRI LRS spectroscopy of GHZ8, a UV-bright galaxy at...

R. Lin, Jorge A. Zavala, J. Álvarez-Márquez et al. · 0 citations

Preprint Sep 2026

PRISMS. GHZ1. A standard tale of galaxy evolution with atypical ionizing conditions at $z=9.878$

[Abridged] The first operating years of the James Webb Space Telescope (JWST) have revealed a surprising number of $z \gtrsim 10$ UV-bright objects, many of them characterized by their compactness, anomalous chemical abundance patterns and complex ISM physics (e.g. N-enhanced systems). To assess whether these objects a...

B. P'erez-D'iaz, M. Castellano, J. Álvarez-Márquez et al. · 0 citations