Kinematics and distribution of dense gas in Seyfert nuclei

We report on high spatial and spectral resolution observations of the distribution, physical parameters and kinematics of the molecular interstellar medium toward the nuclei of three nearby active galaxies. The data consist of high resolution interferometric observations of the HCN and CO J = 1 → 0 lines, single dish observations of several mm/submm isotopic lines of HCN and CO, and subarcsecond resolution imaging spectroscopy of the near-IR K-band.