JWST data show massive quiescent galaxies in high-redshift proto-clusters formed and quenched simultaneously, with AGN signatures, indicating environmental triggering of quenching.
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A z=2.96 protocluster in COSMOS shows +0.2 dex higher stellar masses, mild SFR enhancement in low-mass galaxies, and no rise in quiescent fraction compared to the field.
Massive quiescent galaxies at high redshifts show elevated fractions in small-scale overdensities, indicating environmental quenching via galaxy interactions plays a major role.
citing papers explorer
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DeepDive: Simultaneous Formation of Massive Quiescent Galaxies in High-Redshift Galaxy Proto-clusters
JWST data show massive quiescent galaxies in high-redshift proto-clusters formed and quenched simultaneously, with AGN signatures, indicating environmental triggering of quenching.
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Early Emergence of Environmental Effects: Accelerated Galaxy Assembly in a z=2.96 Protocluster in the COSMOS Field
A z=2.96 protocluster in COSMOS shows +0.2 dex higher stellar masses, mild SFR enhancement in low-mass galaxies, and no rise in quiescent fraction compared to the field.
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The role of small-scale environments in the quenching of massive galaxies at $1<z<5$
Massive quiescent galaxies at high redshifts show elevated fractions in small-scale overdensities, indicating environmental quenching via galaxy interactions plays a major role.