منابع مشابه
Numerical Models of Spin-orbital Coupling in Neutron Star Binaries
We present a new numerical scheme for solving the initial value problem for quasiequilibrium binary neutron stars allowing for arbitrary spins. We construct sequences of circular-orbit binaries of varying separation, keeping the rest mass and circulation constant along each sequence. The spin angular frequency of the stars is shown to vary along the sequence, a result that can be derived analyt...
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We present the results of a 3.5 year long campaign to measure orbital periods of subdwarf B (sdB) star binaries. We directly compare our observed orbital period distribution with that predicted by using binary population synthesis. Up to now, most of our systems seem to have been formed through two of the formation channels discussed by Han et al.(2003), i.e. the first and the second common env...
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The evolution of a protostellar binary system is investigated while it is embedded in its parent molecular cloud core, and is acted upon by gas drag due to dynamical friction. Approximate analytical results are obtained for the energy and angular momentum evolution of the orbit in the limiting cases, where the velocity is much smaller than, and much larger than the velocity dispersion of the ga...
متن کاملOrbital period–Hα correlation in Be star/X-ray binaries?
Reig, Fabregat & Coe (1997) plotted the equivalent width of Hα emission against the orbital period for several Be star/X-ray binary systems, and find a correlation. If instead of the equivalent width, which is a relative quantity, the luminosity of Hα emission, which is an absolute quantity, is used the correlation is not found.
متن کاملNonadiabatic resonant dynamic tides and orbital evolution in close binaries
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1954
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/114.5.600