Scholarlink

Abstract <p>The paper presents an analysis of high-precision satellite light curves of exoplanets HD&#xa0;189733b and HD&#xa0;209458b. 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&#xa0;189733b 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&#xa0;209458b largely depend on the adopted eccentricity of the system.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Characteristics of Exoplanets in Transiting Systems HD 189733 and HD 209458: Considering the Four-Parameter Law of Star Darkening within the Framework of a Three-Dimensional Model of Its Atmosphere

  • 期刊论文

  • 发表日期：

    2025年7月1日

查看全文
  • E. V. Bekesov

摘要

Abstract

The paper presents an analysis of high-precision satellite light curves of exoplanets HD 189733b and HD 209458b. 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 189733b 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 209458b largely depend on the adopted eccentricity of the system.