Opacity for realistic 3D MHD simulations of cool stellar atmospheresA. Perdomo García, N. Vitas, E. Khomenko, M. Collados, C. Allende Prieto, I. Hubeny and Y. OsorioA&A, 675 (2023) A160DOI: https://doi.org/10.1051/0004-6361/202346341