Tracing pebble drift and trapping using radial carbon depletion profiles in protoplanetary disks J. A. Sturm, M. K. McClure, D. Harsono, S. Facchini, F. Long, M. Kama, E. A. Bergin and E. F. van Dishoeck A&A, 660 (2022) A126 Published online: 29 April 2022 DOI: 10.1051/0004-6361/202141860