Apsidal Motion Study of the Eclipsing Binary Star V459 Cas: A Possible Discrepancy Between the Theory and Observation

Author： Dariush Ali   Mosleh Moein   Dariush Dena  

Publisher： Springer Publishing Company

ISSN： 0004-640X

Source： Astrophysics and Space Science, Vol.305, Iss.1, 2006-09, pp. : 85-90

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Abstract

Photometric observation of the eccentric eclipsing binary V459 Cas (e = 0.0244) was performed to find a new rate of apsidal motion. Also the advance of the periastron is calculated theoretically by taking into account the Newtonian (classical) and general-relativistic effects according to physical and orbital parameters of the system. A new observed rate of apsidal motion of 19∘.8/100 yr is computed which is not in agreement with the one reported earlier. Meanwhile a theoretical value of 2∘.64/100 yr is obtained which is 7.49 times smaller than the observed one.

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