Fig. 12
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Comparison of the 268.149 GHz line profiles in U Her observed with the mid configuration of the main array in Oct 2018 and Aug 2019 (blue and red curves, respectively). The spactra are extracted for an aperture diameter of 0.″4; the Spectral resolution is ∼1 km s−1. The vertical line shows the systemic stellar velocity. The mom 0 emission maps at these two epochs are presented in Fig. 14.
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