Redshifted methanol absorption tracing infall motions of high-mass star formation regions W. J. Yang, K. M. Menten, A. Y. Yang, F. Wyrowski, Y. Gong, S. P. Ellingsen, C. Henkel, X. Chen and Y. Xu A&A, 658 (2022) A192 Published online: 24 February 2022 DOI: 10.1051/0004-6361/202142811