Zeroth moment maps of AlCl observed towards W Aql using ALMA in the extended array configuration. Transitionsare labelled in the top right of each panel. The black contours indicate levels of 3, 5, and 10σ. The dotted red contour encloses 50% the total continuum flux. The ellipses in the bottom left of each panel indicate the synthetic beams for the molecular emission (white) and continuum emission (red).