Polarised continuum emission (greyscale) and the 338 GHz continuum contours of CW Leo (left) and R Leo (right). The polarisation peaks at 6.9 and 0.4 mJy beam⁻¹ for CW Leo and R Leo, respectively. The contours are drawn at 0.625%, 1.25%, 2.5%, 5%, 10%, 20%, 40%, and 80% of the peak emission (1.059 and 0.302 Jy beam⁻¹ for CW Leo and R Leo, respectively). The line segments indicate the linear polarisation direction where polarised emission is detected at > 5σ_P. The uncertainty on the direction is ≲6°. The segments are scaled as indicated by the horizontal bar. The filled ellipses indicate the beam size of the observations.