Hot Super-Earths with Hydrogen Atmospheres: A Model Explaining Their Paradoxical Existence

@article{ModirroustaGalian2019HotSW,
  title={Hot Super-Earths with Hydrogen Atmospheres: A Model Explaining Their Paradoxical Existence},
  author={D. Modirrousta-Galian and D. Locci and G. Tinetti and G. Micela},
  journal={arXiv: Earth and Planetary Astrophysics},
  year={2019}
}
  • D. Modirrousta-Galian, D. Locci, +1 author G. Micela
  • Published 2019
  • Physics
  • arXiv: Earth and Planetary Astrophysics
  • In this paper we propose a new mechanism that could explain the survival of hydrogen atmospheres on some hot super-Earths. We argue that on close-orbiting tidally-locked super-Earths the tidal forces with the orbital and rotational centrifugal forces can partially confine the atmosphere on the nightside. Assuming a super terran body with an atmosphere dominated by volcanic species and a large hydrogen component, the heavier molecules can be shown to be confined within latitudes of $\lesssim 80… CONTINUE READING
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