Lyα channel maps toward the AzTEC-3+LBG-3 system. Each panel corresponds to the indicated wavelength and velocities with respect to the systemic redshift inferred from the [C II] emission line. The white contours represent the isophotes at S/N = 4, 5, and 6. The red square corresponds to the F160W position of LBG-3 and the red circle to the location of the peak of the [C II] emission of AzTEC-3. The green contours in the fifth panel represent the contours of the continuum-subtracted Lyα surface brightness. The horizontal gray-color bar shows a signal-to-noise ratio from 3 to 5. We refer to Fig. 7 for the 1″ scale.