Contour plots of the continuum emission at 7 (left panel) and 1.4 mm (right panel) imaged with the VLA and SMA interferometers, respectively. The black triangles mark the positions of the sources identified by Furuya et al. (2002) and Beltrán et al. (2004). The 1σ rms of the maps is 6.0 (at 1.4 mm) and 0.8 mJy beam^-1 (at 7 mm), while first contours and steps correspond to 3σ and 6σ. The ellipses in the bottom-left corners show the HPBW: (PA = 74°; SMA) and (PA = −11°; VLA).