Effect of the turbulent magnetic field on the Fe ii 4273.3 and 6149.3 Å lines. The solid curves show synthetic profiles for the field strengths ranging from 0 to 3 kG and for v_esini = 2 and 10 km s^-1. The dotted lines show the difference between the magnetic and non-magnetic profiles, offset vertically by 1.2. The error bar in the upper right corner of each panel corresponds to the S/N of 200:1.