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Fig. 3
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Vobs−Vsys (with Vsys = 8.0 km s−1) versus the distance to the (α, δ)m point for the OH VLBA data shown (top). A clear trend is seen, where the velocity grows as the distance d(α,δ)m decreases. Same relation but for the VLA data of colour (bottom) taken from Argon et al. (2000). Symbols and colours are the same as in Fig. 1.
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