منابع مشابه
Evolution of Close White Dwarf Binaries
We describe the evolution of double degenerate binary systems, consisting of components obeying the zero temperature mass radius relationship for white dwarf stars, from the onset of mass transfer to one of several possible outcomes including merger, tidal disruption of the donor, or survival as a semidetached AM CVn system. We use a combination of analytic solutions and numerical integrations ...
متن کاملEvolution of Close Binaries: Formation and Merger of Neutron Star Binaries
We discuss the formation and evolution of binaries which contain neutron stars or black holes. It is shown that in a stellar system which for 10 yr had star formation rate similar to the current one in the Galactic disc, the rate of neutron star mergers is ∼ 2 × 10 yr, consistent with the observational estimates. The rate of black hole and neutron star mergers is by an order of magnitude lower....
متن کاملNonadiabatic resonant dynamic tides and orbital evolution in close binaries
This investigation is devoted to the effects of nonadiabatic resonant dynamic tides generated in a uniformly rotating stellar component of a close binary. The companion is considered to move in a fixed Keplerian orbit, and the effects of the centrifugal force and the Coriolis force are neglected. Semi-analytical solutions for the linear, nonadiabatic resonant dynamic tides are derived by means ...
متن کاملEnvironments of active close binaries
High-resolution spectroscopic observations were obtained for two eclipsing active close binary systems, GK Hy-drae and TY Pyxidis. For GK Hya excess emission was observed in the Balmer lines and Mg i b lines while TY Pyx showed excess emission in the Balmer lines and Ca ii H & K lines. The emission from GK Hya arises from a global phenomenon associated solely with the secondary component. The l...
متن کاملTev Emission from Close Binaries
It is commonly accepted that candidates for very high energy-ray sources are neutron stars, binary systems, black holes etc. Close binary systems containing a normal hot star and a neutron star (or a black hole) form an important class of very high energy-ray sources. Such systems are variable in any region of the electromagnetic spectrum and they enable us to study various stages of stellar ev...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1981
ISSN: 0074-1809
DOI: 10.1017/s0074180900073836