Imagery of DG Tau. (a) Moment-0 map of the ¹²CO 2−1 line. (b) Moment-1 map of the ¹²CO 2−1 line. (c) Moment-0 of the CS 5−4 line. (d) Moment-1 of the CS 5−4 line. (e) Integrated spectra of CO and CS from the region labelled I in c. (f) Integrated spectra of CO, SO, and CS from the region labelled II in c. In each map, red and white (or black) contours indicate the continuum and SO 4₅ − 3₄ line emission, respectively, as in Fig. 1. North is up, east is left.