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Fig. 2
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Three typical examples of the different CO line shapes, with the best-fit soft parabola shown with a dotted red line. From left to right: LP And (IRAS 23320+4316) shows a soft parabola profile, V360 And (IRAS 01556+4511) shows a double-wind profile, and ST Her (IRAS 15492+4837) shows an asymmetric profile with line wings.
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