Fig. 10. CVF spectrum towards Ori A (heavy solid line). The ordinates give fluxes in Jy per pixel. The fit to the continuum is shown by the thin solid line. The fit (see Sect. 3) to these data comprises, from top to bottom on the right-hand axis: 100-K amorphous astronomical silicate (dot-dashed line), 110-K amorphous carbon (dashed line), 235-K amorphous astronomical silicate (dot-dashed line) and 330-K amorphous carbon emission (dashed line).