Fig. 3

Evolution of CE type systems of Table 1. Refer to Fig. 2 caption for description of evolutionary stages shown. The CE-A merger exhibits properties of a J-star on the EAGB unlike the COAL-B merger which has C/O > 1 only during TDU and hence has a short phase on the TPAGB (marked by the dotted lines) when it classifies as a J-star.
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