Model light curves for the different light curve shapes. The left panel shows approximately sinusoidal light curves from the ‘S’-labelled regions in Fig. A.2. They can have a range of amplitudes, average values, and shapes. The examples shown are for i = 10° and ϕ = 89°, 55°, 20° (full, dashdotted, dotted). The middle panel shows pulse-like light curves, labelled ‘P’ in Fig. A.2. They vary both in amplitude and width, but during atleast some of the phase the intensity is 0. The examples shown are for [i, ϕ] = [20°, 0°], [60°, −20°], [80°, 75°]; (full, dashdotted, dotted). The right panel shows ‘M’-shaped light curves, labelled ‘M’ in Fig. A.2. The examples shown are for with i = 35° ,45° ,80° and ϕ = 90° −i (full, dashed-dotted, dotted). The grey line shows a model i = 80° and ϕ = −10°.