(a): HCO⁺ emission toward M512. Beam is in the lower right corner (b): Zoom-in on DCO⁺ (blue), N₂D⁺ (orange) and C¹⁸O (magenta) moment 0, with 5σ dust continuum (gray) from Cacciapuoti et al. (2024). Separated maps are in Figure C.1. Dashed gray lines show the spatial profiles paths (Figure 2). Beams are the colored filled circles, and the solid lines the primary beams. The green arrow is the TIPSY stream-model trajectory from Cacciapuoti et al. (2024). Contours starts at 3σ with 2σ steps (σ = 0.32, 0.24, 0.22 mJy beam⁻¹ km s⁻¹ for DCO⁺ N₂D⁺ and C¹⁸O, respectively), and 5σ steps for HCO⁺ (σ= 3 mJy beam⁻¹ km s⁻¹).