Fig. 1
Continuum images of the four observed bands. Central rest frequencies are shown in the upper left corner. Contours represent the 3, 6, 10, 20, 40, 80, 150, 300, and 600σ levels, where the σ for each image is indicated in the upper right corner. As a reference, the fitted positions for the two nuclei at 354.2 GHz are indicated as crosses.
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