Ice Lines, Planetesimal Composition and Solid Surface Density in the Solar Nebula

Abstract

To date, there is no core accretion simulation that can successfully account for the formation of Uranus or Neptune within the observed 2-3 Myr lifetimes of protoplanetary disks. Since solid accretion rate is directly proportional to the available planetesimal surface density, one way to speed up planet formation is to take a full accounting of all the planetesimal-forming solids present in the solar nebula. By combining a viscously evolving protostellar disk with a kinetic model of ice formation, we calculate the solid surface density in the solar nebula as a function of heliocentric distance and time. We find three effects that strongly favor giant planet formation: (1) a decretion flow that brings mass from the inner solar nebula to the giant planet-forming region, (2) recent lab results (Collings et al. 2004) showing that the ammonia and water ice lines should coincide, and (3) the presence of a substantial amount of methane ice in the trans-Saturnian region. Our results show higher solid surface densities than assumed in the core accretion models of Pollack et al. (1996) by a factor of 3 to 4 throughout the trans-Saturnian region. We also discuss the location of ice lines and their movement through the solar nebula, and provide new constraints on the possible initial disk configurations from gravitational stability arguments.

Version 2: reflects lead author's name and affiliation change, contains minor changes to text from version 1. 12 figures, 7 tables, accepted for publication in Icarus

References in corpus (30)

• Disk Frequencies and Lifetimes in Young Clusters
• Spectral Energy Distributions of T Tauri Stars With Passive Circumstellar Disks
• Low Temperature Opacities
• Formation of methyl formate and other organic species in the warm-up phase of hot molecular cores
• Rosseland and Planck Mean Opacities for Protoplanetary Discs
• Photoevaporation of protoplanetary discs II: evolutionary models and observable properties
• Effects of Dust Growth and Settling in T Tauri Disks
• The Evolution of the Water Distribution in a Viscous Protoplanetary Disk
• Molecular Hydrogen Formation on Astrophysically Relevant Surfaces
• Thermal Desorption of Water-Ice in the Interstellar Medium
• Spectral Energy Distributions of T Tauri and Herbig Ae Disks: Grain Mineralogy, Parameter Dependences, and Comparison with ISO LWS Observations
• Grain Retention and Formation of Planetesimals near the Snow Line in MRI-driven Turbulent Protoplanetary Disks
• Molecular Evolution and Star Formation: From Prestellar Cores to Protostellar Cores
• Molecular hydrogen formation in the interstellar medium
• Turbulent Mixing and the Dead Zone in Protostellar Disks
• Annealing of Silicate Dust by Nebular Shocks at 10 AU
• Local Hydrodynamic Stability of Accretion Disks
• Dead Zone Accretion Flows in Protostellar Disks
• New Jupiter and Saturn formation models meet observations
• Nonlinear Evolution of the Magnetorotational Instability in Ion-Neutral Disks
• Thermal Processing of Silicate Dust in the Solar Nebula: Clues from Primitive Chondrite Matrices
• Global magnetohydrodynamical models of turbulence in protoplanetary disks I. A cylindrical potential on a Cartesian grid and transport of solids
• Crystalline silicates as a probe of disk formation history
• On the Ionisation Fraction in Protoplanetary Disks II: The Effect of Turbulent Mixing on Gas--phase Chemistry
• Turbulence driven diffusion in protoplanetary disks - chemical effects in the outer disk
• Saturn Forms by Core Accretion in 3.4 Myr
• Benzene formation in the inner regions of protostellar disks
• Slow nucleation rates in Chain Inflation with QCD Axions or Monodromy
• Efficient Stochastic Simulations of Complex Reaction Networks on Surfaces
• Planetesimal growth in turbulent discs before the onset of gravitational instability

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