Figure 5.13 shows the Pa Beta and Br Gamma emission lines of types II and III. Pa Beta emission lines of Type II and Type III are on the top and middle rows respectively, while the Br Gamma Type II emission lines are on the bottom row.
The number of emission lines classified as either Type II or Type III is small. For emission lines of these classes, histograms of the various line parameters were therefore not computed.
The emission lines with these types of profiles have characteristics similar to those displayed by Type I profiles. Differences arise due to the presence of the blueshifted absorption feature in CW Tau (Type II B) and due to the presence of the redshifted absorption feature in the remaining stars (Types II R and III R). These absorptions change mainly the asymmetry factors, which become larger for types II R and III R and smaller for Type II B relatively to Af's in Type I profiles.