Interferometric images of FU Ori (contour and grayscale). Left: SMA 224 GHz image. Contour levels are 4.8 mJy beam^-1 (3σ) × [−2, −1, 1, 2, 3]. Right: JVLA 29–37 GHz image. Contour levels are 10.8 μJy beam^-1 (3σ) × [−2, −1, 1, 2, 3, 4, ···, 13, 14, 15]. Dashed contours present negative intensity. Cross and square in the left panel mark the locations of FU Ori and FU Ori S, which were obtained from the two-dimensional Gaussian fits to the JVLA 33 GHz image. Green box in the left panel shows the field of view of the right panel. We assume a distance of 353 pc.