Comparison of 2D and 3D compressible convection in a pre-main sequence star J. Pratt, I. Baraffe, T. Goffrey, C. Geroux, T. Constantino, D. Folini and R. Walder A&A, 638 (2020) A15 Published online: 03 June 2020 DOI: 10.1051/0004-6361/201834736