Overview
- Webb’s measurement places MoM‑z14 about 280 million years after the Big Bang, the farthest confirmed galaxy to date.
- The spectroscopic redshift was secured with JWST’s Near-Infrared Spectrograph, superseding earlier photometric estimates.
- MoM‑z14’s luminosity fits a growing population of early galaxies far brighter than pre‑Webb predictions.
- Spectra show unusual nitrogen enrichment and signs that the galaxy is ionizing its surroundings, offering clues to reionization.
- The team led by Rohan Naidu reports the result in an arXiv preprint submitted to the Open Journal of Astrophysics.