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Fig. A.1
CO line emission from R Dor at different observing epochs: emission from J = 1–0, 2–1, 3–2 measured by SEST in 1990–2000, and from J = 2–1, 3–2, 4–3 by APEX in 2005–2014. The y-axis shows the line intensity at an arbitrary scale, chosen to optimise the visibility of the possible variations.
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