WISDOM project – XVIII. Molecular gas distributions and kinematics of three megamaser galaxies by Liang, F-H, Smith, MD, Bureau, M, Gao, F, Davis, TA, Cappellari, M, Elford, JS, Greene, JE, Iguchi, S, Lelli, F, Lu, A, Ruffa, I, Williams, TG, Zhang, H

“…We attempt to identify targets to cross-check two of the most accurate methods, megamaser, and cold molecular gas dynamics. Three promising galaxies are selected from all those with existing megamaser SMBH mass measurements. …”

WISDOM Project – XIX. Figures of merit for supermassive black hole mass measurements using molecular gas and/or megamaser kinematics by Zhang, H, Bureau, M, Smith, MD, Cappellari, M, Davis, TA, Dominiak, P, Elford, JS, Liang, F-H, Ruffa, I, Williams, TG

“…However, molecular gas observations of nearby galaxies using the most extended configurations of the Atacama Large Millimeter/sub-millimeter Array can resolve the SOI comparably well and thus enable SMBH mass measurements as precise as the best megamaser measurements.…”

WISDOM project – V. Resolving molecular gas in Keplerian rotation around the supermassive black hole in NGC 0383 by North, EV, Davis, TA, Bureau, M, Cappellari, M, Iguchi, S, Liu, L, Onishi, K, Sarzi, M, Smith, MD, Williams, TG

“…This work demonstrates that low-J CO emission can resolve gas very close to the SMBH ($\approx 140\, 000$ Schwarzschild radii) and hence that the molecular gas method is highly complimentary to megamaser observations, as it can probe the same emitting material.…”