Quenching effectiveness of ionized gas outflows in SXDF-NB1006-2

Ascertain whether the observed ionized gas outflows in the galaxy SXDF-NB1006-2, traced by the broad [O III] λ5008 component with an outflow velocity of ~535 km s^{-1} and the derived mass loading factors, can effectively quench ongoing star formation in this system.

Background

From NIRSpec IFU data, the authors detect a robust broad component of [O III] λ5008, indicative of ionized gas outflows. They estimate an outflow velocity of ~535 km s{-1}, an outflow mass, and the mass loading factor (η), noting substantial uncertainties.

They compare their measurements with JADES samples and FIRE-2 simulation predictions, and discuss potential contributions from neutral phases. Despite these analyses, they explicitly state uncertainty about whether such outflows can effectively quench star formation in SXDF-NB1006-2.

References

However, considering the large uncertainties of the estimated mass loading factors, it is uncertain whether the outflows can effectively quench the star formation in our target.

— RIOJA. Young Starburst and Ionized Gas Outflows in a $z = 7.212$ Galaxy Uncovered by JWST NIRCam and NIRSpec Observations  (2510.25721 - Ren et al., 29 Oct 2025) in Section 5.1.2 (Mass Loading Factor)