Left panel: The color scale shows the integrated intensity of the isolated N₂H⁺ hyperfine component F ₁ = 0–1. The white contours show the cores identified in o‐H₂D⁺ (labeled with numbers), and the star symbols the positions of the protostars (labeled in bold face). The scale bar is indicated in the bottom-right corner. The white ellipse shows the beam size of the N₂H⁺ data, while the smaller gray ellipse represents the o‐H₂D⁺ beam size. Right panel: position–velocity plot from the results of ACORNS. The plot is the projection in R.A.–velocity space of the 3D plot shown in Figure 9. Right-ascension values are given as offsets with respect to the center of the FoV (position: R.A. = 18^h17^m22.ˢ05, decl. = −16°25′01.″7). The four main trees identified by ACORNS are shown with distinct colors, and the color scale is determined by the peak intensity of the line, stretching linearly between 0 K and 90% of the maximum T _peak in each tree. The positions of the prestellar and the protostellar cores are shown with the black circles and the yellow stars, respectively. Labels correspond to those in the left panel.