Growing and moving low-mass planets in non-isothermal disks
نویسندگان
چکیده
منابع مشابه
Growing and moving low-mass planets in non-isothermal disks
Aims. We study the interaction of a low-mass planet with a protoplanetary disk with a realistic treatment of the energy balance by doing radiation-hydrodynamical simulations. We look at accretion and migration rates and compare them to isothermal studies. Methods. We used a three-dimensional version of the hydrodynamical method RODEO, together with radiative transport in the fluxlimited diffusi...
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Torque fluctuations due to magnetorotational turbulence in proto-planetary disks may greatly influence the migration patterns and survival probabilities of nascent planets. Provided that the turbulence is a stationary stochastic process with finite amplitude and correlation time, the resulting diffusive migration can be described with a FokkerPlanck equation, which we reduce to an advection-dif...
متن کاملRadiation-Driven Warping. II. Non-Isothermal Disks
Recent work by Pringle and by Maloney, Begelman & Pringle has shown that geometrically thin, optically thick, accretion disks are unstable to warping driven by radiation torque from the central source. This work was confined to isothermal (i.e., surface density Σ ∝ R−3/2) disks. In this paper we generalize the study of radiation-driven warping to include general power-law surface density distri...
متن کامل00 9 On the horseshoe drag of a low - mass planet . I - Migration in isothermal disks
We investigate the unsaturated horseshoe drag exerted on a low-mass planet by an isothermal gaseous disk. In the globally isothermal case, we use a formalism, based on the use of a Bernoulli invariant, that takes into account pressure effects, and that extends the torque estimate to a region wider than the horseshoe region. We find a result that is strictly identical to the standard horseshoe d...
متن کاملHalting Type I planet migration in non-isothermal disks
Aims. We investigate the effect of including a proper energy balance on the interaction of a low-mass planet with a protoplanetary disk. Methods. We use a three-dimensional version of the RODEO method to perform hydrodynamical simulations including the energy equation. Radiation is included in the flux-limited diffusion approach. Results. The sign of the torque is sensitive to the ability of th...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2007
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20078592