Redshift-dependent galaxy formation efficiency at z = 5 − 13 in the FirstLight Simulations D. Ceverino, Y. Nakazato, N. Yoshida, R. S. Klessen and S. C. O. Glover A&A, 689 (2024) A244 Published online: 17 September 2024 DOI: 10.1051/0004-6361/202450224