Comparison of several bolometric LC models. The “no CSM” model and the 10^-4 M_⊙ yr^-1 model are the same as in Fig. 1. The AN1 model is the expected contribution of the luminosity from the interaction in the 10^-4 M_⊙ yr^-1 model which is estimated with the analytic LC model of Moriya et al. (2013b). Adding the “no CSM” and AN1 models, we obtain the “no CSM + AN1” model, which roughly matches the overall LC evolution of the 10^-4 M_⊙ yr^-1 model. The LC model of van Veelen (2010) is obtained from a numerical two-dimensional LC calculation with the similar initial conditions in the 10^-4 M_⊙ yr^-1 model. The AN2 model is the analytic LC estimate for the van Veelen (2010) model. See Sect. 3 for details.