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Tidally–Induced Angular Momentum Transport in Disks

Published online by Cambridge University Press:  13 May 2016

Caroline E. J. M. L. J. Terquem
Caroline E. J. M. L. J. Terquem*
Affiliation:
Institut d'Astrophysique de Paris, 98bis Bd Arago, 75014 Paris, France

Abstract

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We discuss the transport of angular momentum induced by tidal effects in a disk surrounding a star in a pre–main sequence binary system. We consider the effect of both density and bending waves. Although tidal effects are important for truncating protostellar disks and for determining their size, it is unlikely that tidally–induced angular momentum transport plays a dominant role in the evolution of protostellar disks. Where the disk is magnetized, transport of angular momentum is probably governed by MHD turbulence. In a non self–gravitating laminar disk, the amount of transport provided by tidal waves is probably too small to account for the lifetime of protostellar disks. In addition, tidal effects tend to be localized in the disk outer regions.

Type
IX. Theoretical Context - Detailed Calculations
Information
Symposium - International Astronomical Union , Volume 200: The Formation of Binary Stars , 2001 , pp. 406 - 409
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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