Moment 0 maps (in Jy beam⁻¹ km⁻¹ s⁻¹) of C¹⁷O (3−2), H¹³CO⁺ (4−3), SO₂ (8−7), and (blended) H¹³CN (4−3). The velocity ranges are given in Table 1. Black contours show the Stokes I continuum at 7 and 49 mJy beam⁻¹. The beam for each map is in the lower-left corner. The upper panels use log scaling to highlight the extended emission, whereas the bottom panels have linear scaling. The line maps are not primary-beam-corrected, for the sake of visualization. The first panel shows labels for VLA 1623W (W) and the velocity streamers (S) from Mercimek et al. (2023) for clarity.