Hostname: page-component-cd9895bd7-p9bg8 Total loading time: 0 Render date: 2024-12-25T15:43:07.111Z Has data issue: false hasContentIssue false
  • English
  • Français

Planetesimal dynamics in hydromagnetic turbulence

Published online by Cambridge University Press:  10 November 2011

Oliver Gressel ,
Richard P. Nelson  and
Neal J. Turner
Oliver Gressel
Affiliation:
Astronomy Unit, Queen Mary, University of London, Mile End Road, London E1 4NS, UK
Richard P. Nelson
Affiliation:
Astronomy Unit, Queen Mary, University of London, Mile End Road, London E1 4NS, UK
Neal J. Turner
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 email: [email protected], [email protected], [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Planet formation theory is founded on the concept of dust coagulation and subsequent growth into planetesimals. This process is by no means an isolated one, but possibly happens in a turbulent nebula. It is therefore crucial to understand how particles of different sizes are affected by their gaseous environment via stochastic forcing and aerodynamic damping. We here report on the effects of magneto-rotational (MRI) turbulence in the presence of non-uniform ionisation leading to the formation of a magnetically inactive dead-zone. While we find that collisional growth is impeded by fully-active MRI, it may be possible within a dead-zone.

Keywords

accretion disksMHDmethods: numericalplanetary systems: formationplanetary systems: protoplanetary disks
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. 424 - 425
Copyright
Copyright © International Astronomical Union 2011

References

Gammie, C. F. 1996, ApJ, 457, 355CrossRefGoogle Scholar
Gressel, O. 2010, MNRAS, 405, 41Google Scholar
Johansen, A. & Youdin, A. 2007, ApJ, 662, 627CrossRefGoogle Scholar
Nelson, R. P. 2005, A&A, 443, 1067Google Scholar
Nelson, R. P. & Gressel, O. 2010, MNRAS, 409, 1392CrossRefGoogle Scholar
Ilgner, M. & Nelson, R. P. 2006, A&A, 445, 205Google Scholar
Turner, N. J. & Drake, J. F. 2009, ApJ, 703, 2152CrossRefGoogle Scholar
Turner, N. J. & Sano, T. 2008, ApJL, 679, L131CrossRefGoogle Scholar