Molecular Gas Reservoirs in Jellyfish Galaxies: Insights from ALMA JELLY

Ram pressure stripping (RPS) significantly alters the molecular gas reservoirs of cluster galaxies, directly impacting their ability to form stars. As part of the ALMA JELLY collaboration, we analyze ALMA CO(2-1) observations of 28 nearby jellyfish galaxies at ∼500 pc resolution. The sample spans a range of stripping stages and interaction geometries with the intracluster medium. We analyze the distribution of molecular gas, identifying asymmetries in its morphology and kinematics. Using kinematic modeling, we compare observed velocity fields of the remaining molecular discs to idealized rotating disc models, allowing us to isolate non-circular motions and kinematic disturbances induced by the RPS. Using supplemental multi-wavelength data (including MUSE/VLT and MeerKAT), we will also compare the characteristics and kinematic properties of different gas phases to better quantify the effects of RPS. This study aims to improve our understanding of how molecular gas is affected in cluster galaxies undergoing stripping and its implications for the regulation of star formation in dense environments.