Close-up of the L723 field including the K2 and K1 near-infrared structures, in the neighbourhood of the radio continuum multiple system VLA 2. In the lower-right panel, the crosses mark the positions of the sources SMA1 and SMA2 detected at 1.35 mm by Girart et al. (2009). The circles mark the positions of the four components of VLA 2 (i.e. VLA 2A to D) detected at 3.6 cm and 7 mm by Carrasco-González et al. (2008). The SiO outflow reported by Girart et al. (2009) has been superposed on the image with white contours. The position of the H2 emission peak of K2 has been marked with a tilted cross in the other three panels.
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