On the Need for a Classification System for Consistent Characterization of the Composition of Planetary Bodies

A classification system is presented for characterizing the composition of planetary bodies. From mass-radius and mass-density relationships, planets may be broadly grouped into five composition classes identified as: Gas Giant, Rock-Ice Giant, gas-rich Terrestrial, Rock Terrestrial, and Rock-Ice Te...

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Published inarXiv.org
Main Author Russell, David G
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 04.08.2022
Subjects
Classification
Extrasolar planets
Planetary composition
Planetary mass
Solar system
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Abstract A classification system is presented for characterizing the composition of planetary bodies. From mass-radius and mass-density relationships, planets may be broadly grouped into five composition classes identified as: Gas Giant, Rock-Ice Giant, gas-rich Terrestrial, Rock Terrestrial, and Rock-Ice Terrestrial based upon the mass fractions of H-He gas, rock, and ice. For each of these broad composition classes, specific bulk composition classes are defined and characterized with Solar System analog names. The classification system allows for both general and detailed characterization of exoplanets based upon planetary mass-radius-composition models and provides rationale for distinguishing gas-rich super-Earths from mini-Neptunes.
AbstractList A classification system is presented for characterizing the composition of planetary bodies. From mass-radius and mass-density relationships, planets may be broadly grouped into five composition classes identified as: Gas Giant, Rock-Ice Giant, gas-rich Terrestrial, Rock Terrestrial, and Rock-Ice Terrestrial based upon the mass fractions of H-He gas, rock, and ice. For each of these broad composition classes, specific bulk composition classes are defined and characterized with Solar System analog names. The classification system allows for both general and detailed characterization of exoplanets based upon planetary mass-radius-composition models and provides rationale for distinguishing gas-rich super-Earths from mini-Neptunes.
Author Russell, David G
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SubjectTerms Classification
Extrasolar planets
Planetary composition
Planetary mass
Solar system
Title On the Need for a Classification System for Consistent Characterization of the Composition of Planetary Bodies
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