The Role of Environment in Shaping the Assembly Timelines of Massive Quiescent Galaxies at Cosmic Noon
astro-ph.GA
Submitted: 2026-10-14
Updated: 2026-10-14
Comments: 8 pages, 3 figures. Resubmitted to MNRAS after moderate revision
License: http://creativecommons.org/licenses/by/4.0/
The gist: JWST observations of massive quiescent galaxies (MQGs) at z about2 have revealed diverse star formation histories (SFHs).
Abstract
JWST observations of massive quiescent galaxies (MQGs) at z about2 have revealed diverse star formation histories (SFHs). In this letter, we investigate whether these variations are linked to the environment in which MQGs reside, as quantified by the host dark matter halo mass. We identify 12 MQGs from a representative sample of galaxies at 1.6<z<3.5 obtained by the Blue Jay survey, a JWST Cycle 1 program, and infer their SFHs via modelling of the deep NIRSpec medium-resolution spectra along with multi-band photometry. By correlating the formation and quenching epochs of individual MQGs with their respective host halo masses from the 3D-HST survey, we find that after accounting for the redshift range of the sample (1.8<z<2.5), MQGs in more massive haloes formed at significantly earlier cosmic epochs. Meanwhile, although these galaxies also quenched earlier overall, the scatter in quenching epochs across similar halo masses indicates that the quenching process likely involves other contributing factors and is not solely determined by halo mass.
Sources
- The Blue Jay Survey: Deep JWST Spectroscopy for a Representative Sample of Galaxies at Cosmic Noon
- A Review of Galaxy Quenching -- Part II: Theoretical Solutions and Direct Observational Tests
- The initial mass function : from Salpeter 1955 to 2005
- Unveiling the population of massive quenched galaxies at z 2 in the COLIBRE simulations - I. Galaxy demographics
- Where Giants Dwell: Probing the Environments of Early Massive Quiescent Galaxies
- Cosmic quenching
- Early massive galaxy formation in the core of a galaxy protocluster 650 million years after the Big Bang
- Large-Scale Structure in COSMOS-Web: Tracing Galaxy Evolution in the Cosmic Web up to $z \sim 7$ with the Largest JWST Survey
- Dynamical properties and star formation history of a low-mass quenched galaxy at Cosmic Noon
- The role of small-scale environments in the quenching of massive galaxies at 1<z<5
- DeepDive: Simultaneous Formation of Massive Quiescent Galaxies in High-Redshift Galaxy Overdensities
- Overdense fireworks in GOODS-N: Unveiling a record number of massive dusty star forming galaxies at z$\sim$5.2 with the N2CLS
- JADES: deep spectroscopy of a low-mass galaxy at redshift 2.3 quenched by environment
- Net-zero gas inflow: Measurement of the gas consumption history of a massive quiescent galaxy
- ASPIRE: The Environments and Dark Matter Halos of Luminous Quasars in the Epoch of Reionization
- Before its time: a remarkably evolved protocluster core at z=7.88
- Not all protoclusters host evolved galaxies: Evidence for reduced environmental effects in a lower halo mass protocluster at $z = 7.66$
- Deep Submillimeter and Radio Observations in the SSA22 Field. III. Multiwavelength Identifications and Properties of the 850 $\mu$m-selected Submillimeter Galaxies
- RUBIES spectroscopically confirms the high number density of quiescent galaxies from $\mathbf{2<z<5}$
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