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Spots on the Surface of a Star: An Influence on the Estimates of Star–Exoplanet Binary System Parameters

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Abstract

We developed an algorithm to model a light curve observed in a binary system that contains an exoplanet and a host star, on the surface of which there are spots. The spot-caused perturbations in the values of the binary system parameters were analyzed. It has been shown that the stellar surface spottedness produces a weak effects on the values of the stellar radius and orbital inclination, while its influence on the other parameters is noticeable.

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  1. http://lnfm1.sai.msu.ru/~ngostev/Files/ModelingSpots.zip

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ACKNOWLEDGMENTS

We are grateful to Academician A.M. Cherepashchuk for discussing this paper and useful suggestions.

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Authors and Affiliations

  1. Sternberg Astronomical Institute, Moscow State University, 119992, Moscow, Russia

    M. K. Abubekerov & N. Yu. Gostev

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  1. M. K. Abubekerov
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  2. N. Yu. Gostev
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Correspondence to M. K. Abubekerov or N. Yu. Gostev.

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The authors declare that they have no conflicts of interest.

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Translated by E. Petrova

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Abubekerov, M.K., Gostev, N.Y. Spots on the Surface of a Star: An Influence on the Estimates of Star–Exoplanet Binary System Parameters. Astron. Rep. 66, 919–924 (2022). https://doi.org/10.1134/S1063772922100018

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  • DOI: https://doi.org/10.1134/S1063772922100018

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