Fig. A.1
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Proper motion fits for VLA 1623W using the data from Table A.1. Offsets are shown relative to Sadavoy et al. (2019). Best-fit proper motions are given by the dashed lines. Only the 1.3 mm (230 GHz) data are used for the fit. Error bars include a 15 mas pointing uncertainty added in quadrature with the position uncertainty from Table A.1.
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