Erosion of an exoplanetary atmosphere caused by stellar winds

  title={Erosion of an exoplanetary atmosphere caused by stellar winds},
  author={Jos'e Mar'ia Rodr'iguez-Mozos and Andy Moya},
  journal={Astronomy \& Astrophysics},
Aims.We present a formalism for a first-order estimation of the magnetosphere radius of exoplanets orbiting stars in the range from 0.08 to 1.3M⊙. With this radius, we estimate the atmospheric surface that is not protected from stellar winds. We have analyzed this unprotected surface for the most extreme environment for exoplanets: GKM-type and very low-mass stars at the two limits of the habitable zone. The estimated unprotected surface makes it possible to define a likelihood for an exoplanet… 

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