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Fig. 1

image

Continuum emission: 321 GHz colour scale, 658 GHz contours at (–1, 1, 2, 4, 8, 16)× 10 mJy beam-1. Synthesized beams shown at lower left for 321 GHz (white), 658 GHz (blue). (0, 0) at RA 07 22 58.33454 Dec –25 46 03.3275 (J2000). C marks the continuum peak. VY is identified as the star, at the centre of the water maser expansion.