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LIPAD Simulations of Giant Planet Core Formation

Published online by Cambridge University Press:  06 January 2014

Henry Ngo ,
Martin J. Duncan  and
Harold F. Levison
Henry Ngo
Affiliation:
Division of Geological and Planetary Science, California Institute of Technology, MC 150-21, Pasadena, California, USA91101 email: hngo@caltech.edu Department of Physics, Engineering Physics & Astronomy, Queen's University, 99 University Avenue, Kingston, Ontario, CanadaK7L 3N6
Martin J. Duncan
Affiliation:
Department of Physics, Engineering Physics & Astronomy, Queen's University, 99 University Avenue, Kingston, Ontario, CanadaK7L 3N6
Harold F. Levison
Affiliation:
Department of Space Studies, Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, Colorado, USA80302
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Abstract

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We present some preliminary results from our investigation of giant planetary core formation using numerical simulations with the Lagrangian Integrator for Planetary Accretion and Dynamics (LIPAD) by Levison et al. (2012). LIPAD couples dynamics with collisional evolution, including fragmentation. We start with a cold planetesimal disk using particles of a few kilometres in size. Our simulations show growth from kilometre-sized planetesimals to several Earth-mass sized embryos (tens of thousands of kilometers) can occur. However, these embryos may not be large enough to start runaway gas accretion necessary to build the envelopes of gas giant planets.

Keywords

accretionmethods: n-body simulationsmethods: numericalplanets and satellites: formation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S299: Exploring the Formation and Evolution of Planetary Systems , June 2013 , pp. 171 - 172
Copyright
Copyright © International Astronomical Union 2013 

References

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