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Long-term stability of the dead-zone in proto-planetary disks

Published online by Cambridge University Press:  10 November 2011

Mario Flock ,
Neal Turner ,
Natalia Dzyurkevich  and
Hubert Klahr
Mario Flock
Affiliation:
Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany email: flock@mpia-hd.mpg.de
Neal Turner
Affiliation:
Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany email: flock@mpia-hd.mpg.de Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
Natalia Dzyurkevich
Affiliation:
Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany email: flock@mpia-hd.mpg.de
Hubert Klahr
Affiliation:
Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany email: flock@mpia-hd.mpg.de
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Abstract

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We present 3D global non-ideal MHD simulations with a self consistent dynamic evolution of ionization fraction of the gas as result of reduced chemical network. We include X-ray ionization from the star as well as cosmic ray ionization. Based on local gas density and temperature in our chemical network, we determine the magnetic resistivity, which is fed back in MHD simulations. Parameters for dust size and abundance are chosen to have accreting layers and a laminar “dead” mid-plane.

Keywords

accretion disksMHDturbulenceplanetary systems: formationinstabilities
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S276: The Astrophysics of Planetary Systems: Formation, Structure, and Dynamical Evolution , October 2010 , pp. 418 - 419
Copyright
Copyright © International Astronomical Union 2011

References

Balbus, S. A. & Hawley, J. F. 1998, Reviews of Modern Physics, 70, 1CrossRefGoogle Scholar
Dzyurkevich, N., Flock, M., Turner, N. J., Klahr, H., & Henning, T. 2010, A&A, 515, A70Google Scholar
Flock, M., Dzyurkevich, N., Klahr, H., & Mignone, A. 2010, A&A, 516, A26Google Scholar
Turner, N. J., Carballido, A., & Sano, T. N. 2010, ApJ, 708, 188CrossRefGoogle Scholar