Review
Sep 2026
A sub-100 pc view at z~5 of a Multiply-Imaged Massive Quiescent Galaxy
Recent James Webb Space Telescope spectroscopic surveys reveal an abundance of rapidly assembled early galaxies in the first billion years. Cosmological simulations struggle to reproduce this population because models require a rapid, highly efficient conversion of baryons into stars followed by an abrupt cessation of...
R. Pan, D. Marchesini, J. Allingham et al.
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