Molecules with ALMA at Planet-forming Scales (MAPS). XVI. Characterizing the Impact of the Molecular Wind on the Evolution of the HD 163296 System

During the main phase of evolution a protoplanetary disk, accretion regulates inner-disk properties, such as temperature and mass distribution, in turn, physical conditions associated with planet formation. The driving mechanism behind remains uncertain; however, one promising is removal fraction angular momentum via magnetohydrodynamic (MHD) disk wind launched from inner tens astronomical units disk. This paper utilizes CO isotopologue emission to study unique molecular outflow originating HD 163296 obtained Atacama Large Millimeter/submillimeter Array. HD~163296 most well-studied Class II disks proposed host multiple gas-giant planets. We robustly detect large-scale rotating 12CO J=2-1 13CO J=1-0 transitions. constrain kinematics, excitation gas, mass-loss rate. high ratio rates ejection (5 - 50), together rotation signatures flow, provides solid evidence for an MHD wind. find that by sufficient drive through region disk; therefore, driven turbulent viscosity not required explain HD~163296's accretion. low its overall kinematics suggest could be perturbed shocked previously observed high-velocity atomic jet. part MAPS special issue Astrophysical Journal Supplement.