[C II] spectra in the Veil shell taken from pv diagram in Fig. 5 with Gaussian fits. Spectra at Δα = −362′′ to Δα = −1268′′ are averaged over 151′′ × 75.5′′ in order toimprove the signal-to-noise ratio of the faint shell component to be fitted, others are averaged over 75.5′′ × 75.5′′. Coordinate offsets indicate the lower left-hand corner of the rectangle over which the spectra are averaged; Δδ = −907′′. The fit parameters are given in Table 1.