A giant comet-like cloud of hydrogen escaping the warm Neptune-mass exoplanet GJ 436b

@article{Ehrenreich2015AGC,
  title={A giant comet-like cloud of hydrogen escaping the warm Neptune-mass exoplanet GJ 436b},
  author={David Ehrenreich and Vincent Bourrier and Peter J. Wheatley and Alain Lecavelier des Etangs and Guillaume H'ebrard and St{\'e}phane Udry and Xavier Bonfils and Xavier Delfosse and Jean-Michel D'esert and D K Sing and Alfred Vidal-Madjar},
  journal={Nature},
  year={2015},
  volume={522},
  pages={459-461}
}
  • David Ehrenreich, Vincent Bourrier, +8 authors Alfred Vidal-Madjar
  • Published 2015
  • Physics, Medicine
  • Nature
  • Exoplanets orbiting close to their parent stars may lose some fraction of their atmospheres because of the extreme irradiation. Atmospheric mass loss primarily affects low-mass exoplanets, leading to the suggestion that hot rocky planets might have begun as Neptune-like, but subsequently lost all of their atmospheres; however, no confident measurements have hitherto been available. The signature of this loss could be observed in the ultraviolet spectrum, when the planet and its escaping… CONTINUE READING

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