Tracing the chemical footprint of shocks in AGN-host and starburst galaxies with ALMA multi-line molecular studies.

Multi-line molecular observations are an ideal tool for a systematic study of the physico-chemical processes in the Interstellar Medium (ISM), given the wide range of critical densities associated with different molecules and their transitions, and the dependencies of chemical reactions on the energy budget of the system. Recently high spatial resolution of typical shock tracers - SiO, HNCO, and CHOH - have been studied in the potentially shocked regions in two nearby galaxies: NGC 1068 (an AGN-host galaxy) (Huang , , 2022, , A102; Huang , in prep.) and NGC 253 (a starburst galaxy) (K.