most citedThe JWST EXCELS survey: The ages and abundances of massive quiescent galaxies show that downsizing was already in place by

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astro-ph.SR2026

The cold substellar frontier in JWST Extragalactic surveys: a robust parallax measurement yields the most distant known ultra-cold Y dwarf

Feng-Yuan Frey Liu, Derek J. McLeod, Xueqing Chen +12

We present an analysis of JADES-GS-BD-5, an extremely cold Y dwarf identified in the JADES/GOODS-South field. Using multi-epoch JWST/NIRCam imaging spanning a -yr baseline…