A case study of an early galaxy cluster with the Athena X-IFU F. Castellani, N. Clerc, E. Pointecouteau, Y. M. Bahé, J. Schaye and F. Pajot A&A, 682 (2024) A23 Published online: 31 January 2024 DOI: 10.1051/0004-6361/202347612