Fig. 7
Curves of velocity with respect to the stellar rest frame of the sodium and Hα over the pulsation phase φ = 0.8 to φ = 2.2. Shown are the blue components, V (NaB) (blue filled line) and V (HαB) (blue dot-dashed line), and their respective red components, V (NaR) (green dotted line) and V (HαR) (red dashed line). The mean uncertainty is ± 0.6 km s−1.
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