Two-dimensional heat maps illustrating the preferred parameter space (colour-coded by the change in BIC) for detecting stellar DR as a function of projected obliquity and stellar inclination for three different impact parameters (b = 0.1,0.4, and 0.7 from left to right). For a given system, as the impact parameter increases, the parameter space for preferring a DR model over SB decreases and isolated hot-spots appear. These results have been obtained with α = 0.2, and the parameters that were held constant in the three figures are listed in Table 1.