Eytons' Earth: Natural & Alternative Medicine

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Sean N. Raymond,1* Avi M. Mandell,2,3* Steinn Sigurdsson2
Close-in giant planets (e.g., "hot Jupiters") are thought to form far from their host stars and migrate inward, through the terrestrial planet zone, via torques with a massive gaseous disk. Here we simulate terrestrial planet growth during and after giant planet migration. Several-Earth-mass planets also form interior to the migrating jovian planet, analogous to recently discovered "hot Earths." Very-water-rich, Earth-mass planets form from surviving material outside the giant planet's orbit, often in the habitable zone and with low orbital eccentricities. More than a third of the known systems of giant planets may harbor Earth-like planets.
1 Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80309–0392, USA.
2 Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA16802, USA.
3 NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
* These authors contributed equally to this work.

Member of NASA Astrobiology Institute.

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very interesting