Degree of linear polarization of the dust of T2 P_r and its position angle θ_r at a phase angle of 28°.5 are given as a function of wavelength λ in panels (a) and (b), respectively. P_r(λ) extracted from different aperture sizes (ρ) are offset for clarity. In panel a, datapoints in each J- and H-band region were fitted by a linear least-square function (given as thick solid and dashed lines), where upper and lower dotted lines indicate 1σ intervals. In panel (b), the 1σ regions of θ_r and their central values are given.