Zeroth moment map of the AlF (7 → 6) line in the ground vibrational state (colours and white dashed contours) plotted with the zeroth moment map of the Al³⁵ Cl (18 → 17) line in the ground vibrational state (black solid contours). The contours are plotted at levels of 3, 5, and 10σ for AlF and 5 and 10σ for Al³⁵ Cl. The red star indicates the position of the continuum peak. The white and black ellipses in the bottom right indicate the synthetic beam sizes for the AlF and Al³⁵ Cl emission, respectively.