EDE factors for each simulation as a function of η, the ratio of the terminal wind speed to the orbital speed, for a dust condensation radius filling factor of 5% (top) and 80% (bottom). The EDE factors as defined in the text evaluate how the wind is compressed in the orbital plane, with a value of one for a spherically symmetric flow. Different mass ratios (resp. β exponents) are represented with different marker shapes (resp. colors). The solid lines connect the points corresponding to O-rich AGB donor stars. The top axis indicates the corresponding orbital separation for a donor mass of 4 M_⊙, a terminal wind speed of 10 km s⁻¹ (with ), and a mass ratio of one (in blue) and ten (in orange).