Simulations show that intermediate-mass progenitors with non-degenerate cores before helium burning produce a mass-orbital period relation for massive white dwarfs that accounts for long-period systems.
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Enhanced mass transfer stability explains the observed deficit of post-common-envelope binaries with solar-type companions, with inefficient common envelope evolution (alpha_CE=0.25) providing the best match when combined with magnetic braking and selection effects.
citing papers explorer
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Mass-Orbital Period Distribution of Massive White Dwarfs Formed Through Stable Mass Transfer
Simulations show that intermediate-mass progenitors with non-degenerate cores before helium burning produce a mass-orbital period relation for massive white dwarfs that accounts for long-period systems.
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Influence of mass transfer stability on the formation of post-common-envelope binaries
Enhanced mass transfer stability explains the observed deficit of post-common-envelope binaries with solar-type companions, with inefficient common envelope evolution (alpha_CE=0.25) providing the best match when combined with magnetic braking and selection effects.