Volatile-rich Earth-Mass Planets in the Habitable Zone

@article{Kuchner2003VolatilerichEP,
  title={Volatile-rich Earth-Mass Planets in the Habitable Zone},
  author={Marc J. Kuchner},
  journal={The Astrophysical Journal Letters},
  year={2003},
  volume={596},
  pages={L105 - L108}
}
  • M. Kuchner
  • Published 9 March 2003
  • Geology, Physics
  • The Astrophysical Journal Letters
A small planet is not necessarily a terrestrial planet. Planets that form beyond the snow line with too little mass to seed rapid gas accretion (≲10 M⊕) should be rich in volatile ices like H2O and NH3. Some of these planets should migrate inward by interacting with a circumstellar disk or with other planets. Such objects can retain their volatiles for billions of years or longer at ~1 AU as their thick steam atmospheres undergo slow hydrodynamic escape. These objects could appear in future… 

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