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Planet-Disk Symbiosis

Sari, Re’em and Goldreich, Peter (2004) Planet-Disk Symbiosis. Astrophysical Journal Letters, 606 (1). L77-L80. ISSN 2041-8205. doi:10.1086/421080.

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Planets form in disks around young stars. Interactions with these disks cause them to migrate and thus affect their final orbital periods. We suggest that the connection between planets and disks may be deeper and involve a symbiotic evolution. By contributing to the outward transport of angular momentum, planets promote disk accretion. Here we demonstrate that planets sufficiently massive to open gaps could be the primary agents driving disk accretion. Those having masses below the gap opening threshold drift inward more rapidly than the disk material and can only play a minor role in its accretion. An even more intimate symbiosis involving gap opening planets may result if they acquire most of their mass prior to gap formation. Given a small initial eccentricity, just a fraction of a percent, the orbital eccentricity of a massive planet may grow rapidly once a mass in excess of the planet's mass has been repelled to form a gap around the planet's orbit. Then, as the planet's radial excursions approach the gap's width, subsequent eccentricity growth slows so that the planet's orbit continues to be confined within the gap.

Item Type:Article
Related URLs:
URLURL TypeDescription
Sari, Re’em0000-0002-1084-3656
Additional Information:© 2004 The American Astronomical Society. Received 2003 July 5; accepted 2004 March 18; published 2004 April 5. This research was supported in part by an NSF grant AST 00-98301 and NASA grant NAG5-12037. We thank the referee, Roman Rafikov, for comments that tightened the logic of our presentation.
Funding AgencyGrant Number
NSFAST 00-98301
Subject Keywords:planetary systems: formation—planetary systems: protoplanetary disks
Issue or Number:1
Record Number:CaltechAUTHORS:20130228-110021913
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Official Citation:Planet-Disk Symbiosis Re'em Sari and Peter Goldreich 2004 ApJ 606 L77
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37204
Deposited By: Tony Diaz
Deposited On:28 Feb 2013 20:10
Last Modified:09 Nov 2021 23:27

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