Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2010-09-29
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
6 pages, 7 figures, presented at the "Physics of Accreting Compact Binaries" Conference held in Kyoto, Japan on July 26 - 30,
Scientific paper
We present here results of numerical calculations demonstrating that the very long periodic variability detected in the Cataclysmic Variable FS Aur can be the result of eccentricity modulation of a close binary (CB) orbit induced by the presence of a third body on a circumbinary orbit. A third component with a substellar mass on a circular, relatively close orbit, modulates the mass transfer rate of the binary on much longer time scales than periods within the triple system. We also report here preliminary results of X-ray observations of FS Aur, providing further evidence that it contains magnetic and freely precessing white dwarf. These two findings allow us to incorporate the new and previously stressed hypothesis on the nature of FS Aur into one consistent model.
Aguilar Luis
Chavez Carlos
Hambaryan Valeri V.
Neustroev Vitaly
Tomsick John
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