Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978ap%26ss..57..439k&link_type=abstract
Astrophysics and Space Science, vol. 57, no. 2, Aug. 1978, p. 439-455.
Astronomy and Astrophysics
Astrophysics
5
Eclipsing Binary Stars, Fourier Analysis, Light Curve, Stellar Spectrophotometry, Variable Stars, Computer Programs, Perturbation Theory, Recursive Functions
Scientific paper
Explicit expressions are established for the 'photometric perturbations' in the light changes of close eclipsing binary systems, which arise from the mutual distortion of the components, for any type of eclipse. Recursive formulas are given which make it possible to express the associated alpha functions in terms of the basic set of zeroand first-order alpha functions. All requisite integrals of the appropriate form, which constitute the 'boundary corrections' to the light curves, are expressed in a similar way, and all the expressions are used to evaluate the respective terms of the photometric perturbations for any type of eclipse. The photometric perturbations are expressed in terms of certain general types of series that can be easily programmed for automatic computation.
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