Figure 2 Theoretical absorption curves of several types of dust grains. Notice that most of the interesting details lie in the range from 8 to 20 microns, the range covered by the Low Resolution Spectrometer on the IRAS spacecraft. Figure 3 A mapping of the IRAS sources into the color color plane. Groupings are illustrated. A smaller region of this data is used in Fig. 1.
Relevant data is printed alongside each plot.
More Superfit output for four amorphous carbon dust stars, as above covering a range of optical depths. Figure 6 .