Apsidal motion in evolved binary systems
نویسندگان
چکیده
منابع مشابه
The apsidal motion in binary stars. B.V.Vasiliev
The apsidal motion in binary stars. Abstract It is usually accepted to consider an apsidal motion in binary stars as a direct confirmation that a substance inside stars is not uniformly distributed. It is shown in this paper that the apsidal motion in binary systems observation data is in a good agreement with an existence of uniform plasma cores inside stars if they consist of hydrogen-deuteri...
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Photometric and spectroscopic observations and analysis of the eccentric eclipsing binary V459 Cassiopeiae (e = 0.0244) were performed by Lacy et al. (2004). Observations of minimum light show the presence of apsidal motion. In order to find the observed rate of apsidal motion, I followed the procedure described by Guinan & Maloney (1985). A new observed rate of apsidal motion of 15◦.2/100 yr w...
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We have compared observational data of apsidal motion rates for relativistic eclipsing binaries with theoretical predictions based on stellar theoretical models. Ten double-lined eclipsing binaries with high quality light curves and radial velocities were selected. The analysis of the data available indicate that the predictions by the General Relativity and the new stellar models are able to e...
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The quasi-spherical approximation, with some modifications, was implemented in our stellar evolution code to take into account the effect of rotation on the internal structure of the stars and, in particular, on the apsidal motion constant. Three models with masses 2, 7 and 15 M were used since they are representative of the mass range where apsidal motion is detected in binary stars. We adopte...
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It is usually known that the line of apsides of eclipsing binary star systems precesses due to general relativistic effects and classical (Newtonian) tidal and rotational deformations of the stars, whose rotation axes are assumed normal to the orbital plane. For almost all binaries, the expected theoretical and observed apsidal motion rates are in agreement. However, some systems –V541 Cygni, V...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1984
ISSN: 0074-1809
DOI: 10.1017/s0074180900031247