Detection plots for the secondary companion of the binary PX Vir. In the lower panel, the black line with gray error curves corresponds to the adopted solution, which has been calculated with a template of T_eff, B = 4000 K and v sin i = 4 km s⁻¹. In the blue line solution, the projected rotation has been changed to 8 km s⁻¹, while in the red line solution, the template temperature has been increased to 4300 K.