Astrophysics, abstract
astro-ph/0607112
From: Aaron Boley [view email]
Date: Thu, 6 Jul 2006 15:29:26 GMT (784kb)
The Thermal Regulation of Gravitational Instabilities in Protoplanetary Disks III. Simulations with Radiative Cooling and Realistic Opacities
Authors: A. C. Boley, A. C. Mejia, R. H. Durisen, K. Cai, M. K. Pickett, P. D'Alessio
Comments: 45 pages, 17 figures; submitted to ApJ
This paper presents a fully three-dimensional radiative hydrodymanics simulation with realistic opacities for a gravitationally unstable 0.07 Msun disk around a 0.5 Msun star. We address the following aspects of disk evolution: the strength of gravitational instabilities under realistic cooling, mass transport in the disk that arises from GIs, comparisons between the gravitational and Reynolds stresses measured in the disk and those expected in an alpha-disk, and comparisons between the SED derived for the disk and SEDs derived from observationally determined parameters. The mass transport in this disk is dominated by global modes, and the cooling times are too long to permit fragmentation for all radii. Moreover, our results suggest a plausible explanation for the FU Ori outburst phenomenon.
http://arxiv.org/abs/astro-ph/0607112
Space/Science » in reply to The Optical Gravitational Lensing Experiment. Variable Baseline Microlensing Events in the Galactic Bulge
The Thermal Regulation of Gravitational Instabilities in Protoplanetary Disks III. Simulations with Radiative Cooling and Realistic Opacities
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