Comparison of the N2H+ (1–0), in blue, and the o‐H2D+(11,0–11,1) spectra, in black, at the core positions. The spectra are taken at the position of the peak of o‐H2D+ integrated intensity. The red curves show the best model obtained by fitting the N2H+ data with three Gaussian components. The centroid velocity of the o‐H2D+ is shown with the vertical dashed line in each panel.