Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....102..256m&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 102, July 1991, p. 256-261.
Astronomy and Astrophysics
Astronomy
14
Eclipsing Binary Stars, Gravitation Theory, Relativistic Theory, Stellar Orbits, Apsides, Astronomical Photometry, Astronomical Spectroscopy, Eccentricity
Scientific paper
AS Cam (BD + 69 325, HD 35311) is one of several eclipsing binary systems thought to be in violation of the classical relativistic theory governing apsidal motion. To evaluate the system's parameters accurately, the photometric data obtained by Padalia and Srivastava (1975), the V-band photometry reported by Khaliullin and Kozyreva (1983), and the spectroscopic data of Hilditch (1972) were subjected to the procedure described by Wilson (1979) to provide improved orbital elements and physical parameters of the AS Cam system in a unified manner. It is shown that the value for the orbital eccentricity e = 0.10 reported by Krzesinski et al. (1990) from an analysis of the times of minimum light is inconsistent with the photometry and spectroscopy and that the upper limit for the eccentricity might be closer to 0.16. The nature of the failure of the method employed by Krzesinski et al. is discussed.
Guinan Edward F.
Maloney Frank Patrick
Mukherjee Jaydeep
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