Age-dating early quiescent galaxies: high star-formation efficiency, but consistent with direct, higher-redshift observations

Crispin Turner, Sandro Tacchella, Francesco D'Eugenio +9

We present a detailed analysis of JWST/NIRSpec and NIRCam observations of ZF-UDS-7329, a massive, quiescent galaxy at redshift $z=3.2$, which has been put forward to challenge cosm…