Comparison of the lower J and higher J profiles. The red line represents the stacked higher J-transitions (J = P(22)–P(32)) and the black line the lower J-transitions (up to J = P(14)) of v = 1–0 CO. The baseline for the higher stacked J-transitions for AS 205 A and VV CrA A (dashed red) is not straight because of line overlap and blend. All profiles have been normalized to a peak flux of unity.
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