2 papers
astro-ph.GA2025
PANORAMIC: Discovery of an Ultra-Massive Grand-Design Spiral Galaxy at
Mengyuan Xiao, Christina C. Williams, Pascal A. Oesch +26
We report the discovery of an ultra-massive grand-design red spiral galaxy, named Zhúlóng (Torch Dragon), at in the JWST PANORAMIC survey, iden…
astro-ph.GA2025
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 , which has been put forward to challenge cosm…