Detections of dense gas tracers in LARS 3 (top row) and 8 (bottom row). The beam sizes for the transitions are shown in Col. (1) on top of our HST Hα narrow band images. HCN and HCO⁺(1–0) spectra are shown in Cols. (2) and (4). Spectra are given on the T_MB scale in milli Kelvin. Single or double Gaussian fits were performed to calculate the line flux. They are shown as cyan solid lines. The residuals after subtraction of the fits from the data are shown in Cols. (3) and (5).