Map of the reduced χ² of RS Pup’s distance adjustment for the scaled Milky Way dust polarization model (left panel) and the scaled Rayleigh scattering polarization model with θ_max = 92° (right panel), as a function of the adopted p_max value (vertical axis). The white rectangle indicates horizontally the distance range found in the literature and vertically the adopted p_max uncertainty range (51.5% ± 2.0%). The white dots show the position of the minimum χ² for p_max = 49.5, 51.5 and 53.5%. The color scale shown above the map is a function of the square root of the reduced χ² value.