The Heating Efficiency of Hot Jupiters from a Data-driven Perspective
The inflated radii of hot Jupiters have been explored by various theoretical mechanisms. By connecting planetary thermal evolution models with the observed properties of hot Jupiters using hierarchical Bayesian models, a theoretical parameter called the heating efficiency has been introduced to desc...
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IOP Publishing
2025-01-01
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| Series: | The Astronomical Journal |
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| Online Access: | https://doi.org/10.3847/1538-3881/ada945 |
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| author | Sheng Jin Dong-Hong Wu Yi-Xuan Cao Zi-Yi Guo |
| author_facet | Sheng Jin Dong-Hong Wu Yi-Xuan Cao Zi-Yi Guo |
| author_sort | Sheng Jin |
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| description | The inflated radii of hot Jupiters have been explored by various theoretical mechanisms. By connecting planetary thermal evolution models with the observed properties of hot Jupiters using hierarchical Bayesian models, a theoretical parameter called the heating efficiency has been introduced to describe the heating of the interiors of these planets. Previous studies have shown that the marginal distribution of this heating-efficiency parameter has a single-peak distribution along the planetary equilibrium temperature ( T _eq ). Since the observed properties of hot Jupiters are the foundation of these Bayesian inference models, there must be a corresponding feature in the observed data that leads to the inferred single-peak distribution of the heating efficiency. This study aims to find the underlying cause of the single-peak heating-efficiency distribution without relying on specific theoretical models. By analyzing the relationships between different observed physical properties, we obtain a similar single-peak distribution of the radius expansion efficiency of hot Jupiters along T _eq , which can be explained by the correlation with the stellar effective temperature. However, a detailed investigation suggests that this single-peak distribution is actually the result of straightforward physical processes. Specifically, the increase in heating efficiency can be attributed to the increase in incident stellar flux, while the decrease in heating efficiency can be attributed to the rise in the gravitational binding energy associated with the increase in planetary mass. |
| format | Article |
| id | doaj-art-011b80675f814df9a2ee23f69c69be8a |
| institution | Kabale University |
| issn | 1538-3881 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astronomical Journal |
| spelling | doaj-art-011b80675f814df9a2ee23f69c69be8a2025-02-11T07:26:12ZengIOP PublishingThe Astronomical Journal1538-38812025-01-01169313210.3847/1538-3881/ada945The Heating Efficiency of Hot Jupiters from a Data-driven PerspectiveSheng Jin0https://orcid.org/0000-0002-9063-5987Dong-Hong Wu1https://orcid.org/0000-0001-9424-3721Yi-Xuan Cao2Zi-Yi Guo3Department of Physics, Anhui Normal University , Wuhu, Anhui 241002, People’s Republic of China ; jins@ahnu.edu.cn; Purple Mountain Observatory, Chinese Academy of Sciences , Nanjing, Jiangsu 210023, People’s Republic of ChinaDepartment of Physics, Anhui Normal University , Wuhu, Anhui 241002, People’s Republic of China ; jins@ahnu.edu.cnHigh School Affiliated to Nanjing Normal University , Nanjing, Jiangsu 210003, People’s Republic of ChinaHigh School Affiliated to Nanjing Normal University , Nanjing, Jiangsu 210003, People’s Republic of ChinaThe inflated radii of hot Jupiters have been explored by various theoretical mechanisms. By connecting planetary thermal evolution models with the observed properties of hot Jupiters using hierarchical Bayesian models, a theoretical parameter called the heating efficiency has been introduced to describe the heating of the interiors of these planets. Previous studies have shown that the marginal distribution of this heating-efficiency parameter has a single-peak distribution along the planetary equilibrium temperature ( T _eq ). Since the observed properties of hot Jupiters are the foundation of these Bayesian inference models, there must be a corresponding feature in the observed data that leads to the inferred single-peak distribution of the heating efficiency. This study aims to find the underlying cause of the single-peak heating-efficiency distribution without relying on specific theoretical models. By analyzing the relationships between different observed physical properties, we obtain a similar single-peak distribution of the radius expansion efficiency of hot Jupiters along T _eq , which can be explained by the correlation with the stellar effective temperature. However, a detailed investigation suggests that this single-peak distribution is actually the result of straightforward physical processes. Specifically, the increase in heating efficiency can be attributed to the increase in incident stellar flux, while the decrease in heating efficiency can be attributed to the rise in the gravitational binding energy associated with the increase in planetary mass.https://doi.org/10.3847/1538-3881/ada945Extrasolar gaseous giant planetsAstronomy data analysisHot JupitersBayesian statistics |
| spellingShingle | Sheng Jin Dong-Hong Wu Yi-Xuan Cao Zi-Yi Guo The Heating Efficiency of Hot Jupiters from a Data-driven Perspective The Astronomical Journal Extrasolar gaseous giant planets Astronomy data analysis Hot Jupiters Bayesian statistics |
| title | The Heating Efficiency of Hot Jupiters from a Data-driven Perspective |
| title_full | The Heating Efficiency of Hot Jupiters from a Data-driven Perspective |
| title_fullStr | The Heating Efficiency of Hot Jupiters from a Data-driven Perspective |
| title_full_unstemmed | The Heating Efficiency of Hot Jupiters from a Data-driven Perspective |
| title_short | The Heating Efficiency of Hot Jupiters from a Data-driven Perspective |
| title_sort | heating efficiency of hot jupiters from a data driven perspective |
| topic | Extrasolar gaseous giant planets Astronomy data analysis Hot Jupiters Bayesian statistics |
| url | https://doi.org/10.3847/1538-3881/ada945 |
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