A major asymmetric ice trap in a planet-forming disk - II. Prominent SO and SO2 pointing to C/O < 1Alice S. Booth, Nienke van der Marel, Margot Leemker, Ewine F. van Dishoeck and Satoshi OhashiA&A, 651 (2021) L6DOI: https://doi.org/10.1051/0004-6361/202141057