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Mass Transfer Physics in Binary Stars and Applications in Gravitational Wave Sources
Hongwei Ge, Zhanwen Han
The stability criteria of rapid mass transfer and common-envelope evolution are fundamental in binary star evolution. They determine the mass, mass ratio, and orbital distribution…
A potential mass-gap black hole in a wide binary with a circular orbit
Wang Song, Zhao Xinlin, Feng Fabo +28
Mass distribution of black holes identified through X-ray emission suggests a paucity of black holes in the mass range of 3 to 5 solar masses. Modified theories have been devised t…
Adiabatic Mass Loss in Binary Stars. V. Effects of Metallicity and Nonconservative Mass Transfer -- Application in High Mass X-ray Binaries
Hongwei Ge, Christopher Adam Tout, Xuefei Chen +5
Binary stars are responsible for many unusual astrophysical phenomena, including some important explosive cosmic events. The stability criteria for rapid mass transfer and common-e…
Adiabatic Mass Loss In Binary Stars. IV. Low and Intermediate Mass Helium Binary Stars
Lifu Zhang, Hongwei Ge, Xuefei Chen +1
The unstable mass transfer situation in binary systems will asymptotically cause the adiabatic expansion of the donor star and finally lead to the common envelope phase. This proce…
A new route to massive hot subdwarfs: common envelope ejection from asymptotic giant branch stars
Zhenwei Li, Yangyang Zhang, Hailiang Chen +5
The hot subdwarf O/B stars (sdO/Bs) are known as extreme horizontal branch stars, which is of great importance in stellar evolution theory. The sdO/Bs are generally thought to have…
One model to rule them all: magnetic braking from CVs to low-mass stars
Arnab Sarkar, Hongwei Ge, Lev Yungelson +1
We present the results of the study of cataclysmic variables (CVs) and AM Canum Venaticorum (AM CVn) stars with our double dynamo (DD) formalism of angular momentum loss (AML) by m…