Similar to Fig. 1, except that absorption from the three heliospheric models is included. All curves from Fig. 1 are reproduced as solid lines, while the dashed curve is for model 1 (M = 1.5), the dotted curve is for model 2 (M = 0.7), and the dot‐dashed curve is for model 3 (M = 0.9). The profile in (a) depicts the heliospheric absorption for the α Cen A profile, whereas (b) is for α Cen B. The red edge of the LISM absorption feature is best fit by model 3, and note that none of the models can fit the blue edge. In order to suggest the possible importance of the α Cen heliosphere in fitting the blue edge of the LISM feature, profiles (c) and (d) depict the absorption in the α Cen A and B profiles (respectively) that would result if identical heliosphere models also surrounded α Cen.