Possibilities of analysis of brightness distributions for components of eclipsing variables from data of space photometry

Details Possibilities of analysis of brightness distributions for components of eclipsing variables from data of space photometry Possibilities of analysis of brightness distributions for components of eclipsing variables from data of space photometry

2006-07-12

arxiv.org/abs/astro-ph/0607250v1

Astronomy and Astrophysics

Astrophysics

12 pages LaTeX, 6 figures, Contributed paper at the All-Russian Astronomical conference "Close Binary Stars in Modern Astrophy

Scientific paper

10.1080/10556790701306543

We carried out numerical experiments on the evaluation of the possibilities of obtaining the information about brightness distributions for the components of eclipsing variables from the data of high-precision photometry expected for planned satellites COROT and Kepler. We examined a simple model of the eclipsing binary with the spherical components on circular orbits and the linear law of the limb darkening. The solutions of light curves have been obtained as by fitting of the nonlinear model, into the number of parameters of which included the limb darkening coefficients, so also by the solution of the ill-posed inverse problem of restoration of brightness distributions across the disks of stars without rigid model constraints on the form of these functions. The obtained estimations show that if the observational accuracy amounts to 0.0001 then the limb darkening coefficients can be found with the relative error approximately 0.01 . The brightness distributions across the disks of components can be restored also nearly with the same accuracy.

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