Ariel planetary interiors White Paper

Ravit Helled, Stephanie Werner, Caroline Dorn, Tristan Guillot, Masahiro Ikoma, Yuichi Ito, Mihkel Kama, Tim Lichtenberg, Yamila Miguel, Oliver Shorttle, Paul J. Tackley, Diana Valencia, Allona Vazan

Research output: Contribution to journalArticlepeer-review


The recently adopted Ariel ESA mission will measure the atmospheric composition of a large number of exoplanets. This information will then be used to better constrain planetary bulk compositions. While the connection between the composition of a planetary atmosphere and the bulk interior is still being investigated, the combination of the atmospheric composition with the measured mass and radius of exoplanets will push the field of exoplanet characterisation to the next level, and provide new insights of the nature of planets in our galaxy. In this white paper, we outline the ongoing activities of the interior working group of the Ariel mission, and list the desirable theoretical developments as well as the challenges in linking planetary atmospheres, bulk composition and interior structure.

Original languageEnglish
Pages (from-to)323-356
Number of pages34
JournalExperimental Astronomy
Issue number2
StatePublished - Apr 2022

Bibliographical note

Publisher Copyright:
© 2021, The Author(s).


  • Ariel
  • Atmosphere-interior interaction
  • Planet composition
  • Planetary interiors


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