POPCORN: What is the secondary doing? Case A, B or C?

The plots are shown in the case of conservative mass transfer. The different cases of mass transfer (for the primary star) are highlighted.

Data

Red = All systems

Green = Case A (no distinction made between A and AB)

Blue = Case Br

Pink = Case Bc

Light blue = Case C

Yellow = Case BcB (starts on HG)

Black = Case BcB (starts on GB)

Orange = Case CB

Grey = Double spiral-in (two stars fill loose envelope in first CE phase. Do not always become double WD systems)

Comment1: Second B means: The primary fills Roche lobe again as a He-star. (Therefore CB: first case C (when star on E-AGB and fills it again as a He-giant))

Comment2: When He-star fills the Roche lobe, no distinction is made if this is stable or not

Unbinned data

Systems that form 2 WDs

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