Merging in the common envelope and the origin of early R-type stars

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Table 1

Summary of the orbital parameter before the merging of the He-WD and the He-core of the RG star (see text for more details).

Model	M _RG ^a	M _WD ^a	M _core ^a	A ^b	M _f ^a

M1	1.3	0.15	0.2036	20.0	0.7549
M2	1.4	0.20	0.1967	20.0	0.7474
M3	2.0	0.20	0.2307	22.0	1.6572

Notes.

In M_⊙ unit.

In R_⊙ unit.

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