Distribution of LIRGs and other low-z galaxy samples in the SFR–R_CO (left), M_star–R_CO (middle), and sSFR–R_CO (right) planes. Our LIRGs are shown according to the color code presented in Fig. 1. Local spiral galaxy (gray, red-contoured diamonds) values are taken from the EDGE-CALIFA survey (Bolatto et al. 2017) while ETGs (blue contoured, down-pointing triangles) are taken from the ATLAS^3D sample (Cappellari et al. 2013a). ULIRG (purple pentagons) values are derived from ALMA data (Pereira-Santaella et al. 2021). The median value of each sample is shown according to the following color code: purple for ULIRGs, light green for interacting and merger LIRGs, light blue for disky (i.e., RD and PD) LIRGs, orange for spiral galaxies, and dark blue for ETGs. In ULIRGs, the AGN contribution has been removed to estimate their SFRs.