NIRCam, Keck and ALMA maps of the southwestern part of Bar. The maps have been rotated so that the ionizing radiation strikes the Bar from the left. Upper left: Map in the F470N filter continuum subtracted (H₂ 0-0 S(9) line at 4.7 µm). Units are in erg s⁻¹ cm⁻² sr⁻¹. Upper right: Keck/NIRC2 map of the H₂ 1-0 S(1) line at 2.12 µm with a resolution of 0.085″ (Habart et al. 2023). Our NIRCam observations show a very good agreement with Keck/NIRC2 observations in terms of line distribution and intensity. Lower left and right: ALMA observation at 1″ resolution of the HCO⁺ J = 4-–3 line integrated intensity (in K km s⁻¹) and the CO J=3-2 line peak temperatures (T_peak) (Goicoechea et al. 2016). There exists a remarkably similar spatial distribution between the H₂ and HCO⁺ emission from ALMA.