Mapping the 12CO J = 1−0 and J = 2−1 emission in AGB and early post-AGB circumstellar envelopes - I. The COSAS program, first sample

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Fig. 20

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Left: position-velocity diagram along the symmetry axis at PA = 90° of the ¹²CO J = 2−1 emission maps towards IRAS 19475+3119. Contours are plotted from 2σ with the same spacing. Right: the same along an axis at PA = 0°. Contours are plotted from 6σ, with a spacing of 3σ (σ = 11 mJy beam^-1).

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