Abstract
The aim of the present paper has been to analyse the light changes of the close eclipsing system AK Herculis in the frequency domain. This analysis is based on Kopal's new theory recently developed for the study of light variations—between minima as well as within eclipses—of close eclipsing binaries whose components are distorted by axial rotation and mutual tidal action.
A new method for the separation of the photometric proximity and eclipse effects directly from the observed data is also presented. In this method no ‘rectification’ is needed. New elements taking into account the photometric perturbations are also given.
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References
Binnendijk, L.: 1961,Astron. J. 66, 27.
Binnendijk, L.: 1970,Vistas in Astronomy 12, 217.
Bookmyer, B. B.: 1972,Publ. Astron. Soc. Pacif. 84.
Budding, E.: 1974,Astrophys. Space Sci. 29, 17.
Hindeger, F.: 1960,J. des Observateurs 43, 161.
Jordan, F. C.: 1929,Publ. Allegheny Obs. 7, 142.
Kopal, Z.: 1959,Close Binary Systems, Chapman-Hall and John Wiley, London and New York.
Kopal, Z.: 1975a,Astrophys. Space Sci. 34, 431 (Paper I).
Kopal, Z.: 1975b,Astrophys. Space Sci. 35, 159 (Paper II).
Kopal, Z.: 1975c,Astrophys. Space Sci. 35, 171 (Paper III).
Kopal, Z.: 1975d,Astrophys. Space Sci. 36, 227 (Paper IV).
Kopal, Z.: 1975e,Astrophys. Space Sci. 38, 191 (Paper V).
Kopal, Z.: 1976,Astrophys. Space Sci. 45, 269 (Paper IX).
Kopal, Z., Markellos, V., and Niarchos, P.: 1975,Astrophys. Space Sci. 40, 183.
Labs, D. and Stock, J.: 1953,Z. Astrophys. 33, 74.
Pickering, E. C.: 1917, Harv. Obs. Circ., No. 201.
Sanford, R. F.: 1934,Astrophys. J. 79, 89.
Schmidt, H. and Herczeg, T.: 1959,Z. Astrophys. 47, 106.
Seyfert, C. K. and Mason, E. E.: 1951,Astron. J. 56, 48.
Szegö, G.: 1939,Orthogonal Polynomials, Amer. Math. Soc. Colloquium Publ. Vol. 23, New York.
Woodward, E. J.: 1942, Harvard Circ. No. 446, 11.
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Niarchos, P. An analysis of the light changes of the eclipsing system AK Herculis in the frequency domain. Astrophys Space Sci 47, 79–97 (1977). https://doi.org/10.1007/BF00651360
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DOI: https://doi.org/10.1007/BF00651360