Mass- and redshift-dependence of filamentary gas accretion

Determine the relation between filamentary gas accretion and galaxy halo mass and redshift in the early Universe.

Background

The paper considers both isotropic accretion and accretion through narrow filaments because filamentary inflow changes the ram pressure opposing feedback-driven shells. The covering fraction, filament geometry, and accretion momentum substantially affect whether mini-quenching can occur and how long it lasts.

Although an analytic model suggests that filament-fed halos occupy a mass- and redshift-dependent population, the paper emphasizes that the precise mapping between halo properties and filamentary accretion remains unresolved. Establishing this relation is necessary for predicting which observed mini-quenched galaxies can be supplied by filaments and for assessing the model’s quenching predictions.

References

While the exact relation between galaxies being fed by streams and their mass/redshift is unknown, it is clear that special attention should be made to the possibility that observed mini-quenched galaxies are supplied cold gas via filaments.

— A model to mini-quench early galaxies by balancing stellar feedback and gas accretion  (2609.19265 - Luberto et al., 16 Sep 2026) in Section 2.5, “Gas accretion”