RAS PhysicsАстрономический журнал Astronomy Reports

  • ISSN (Print) 0004-6299
  • ISSN (Online) 3034-5170

CHARACTERISTICS OF EXOPLANETS IN TRANSITING SYSTEMS HD 189733 AND HD 209458: TAKING INTO ACCOUNT THE FOUR-PARAMETER LAW OF STAR DARKENING WITHIN THE FRAMEWORK OF A THREE-DIMENSIONAL MODEL OF ITS ATMOSPHERE

PII
S30345170S0004629925090063-1
DOI
10.7868/S3034517025090063
Publication type
Article
Status
Published
Authors
Volume/ Edition
Volume 102 / Issue number 9
Pages
810-820
Abstract
The paper presents an analysis of high-precision satellite light curves of exoplanets HD 189733 b and HD 209458 b. The dependence of the exoplanet radius on the wavelength caused by scattering in the planetary atmosphere is determined using a four-parameter limb darkening law based on a three-dimensional model of the stellar atmosphere. It is shown that when using the same exoplanet system characteristics for all wavelengths, primarily the orbital inclination, as well as when using a four-parameter law with a refined radius of the star, the change in the radius of the exoplanet HD 189733 b with increasing corresponds to the model of an exponential Rayleigh atmosphere with a characteristic height of 380–400 km. At the same time, the characteristics of the atmosphere of HD 209458 b largely depend on the adopted eccentricity of the system.
Keywords
экзопланеты экзопланетные атмосферы HD 189733 b HD 209458 b
Date of publication
01.09.2025
Year of publication
2025
Number of purchasers
0
Views
50

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