[C ii] spectra superposed on a Spitzer 24 μm image at 6′′ resolution of BCLMP 691. The dotted blue contours show the Hα emission at levels of 100, 300, 1000, 3000, and 10 000 counts (Greenawalt 1998; Hoopes & Walterbos 2000). Only positions with detected [C ii] flux are shown. The velocity scale is from −300 to −230   km   s^-1 and the y axis is from −0.2 K to 1 K. The beamsize is shown as a circle around the southernmost spectrum.