Chapter 10 Growth of Dust Grains in the Turbulent Solar Nebula : Part IV Physical Processes in the Solar Nebula : Origin of the Solar System

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概要

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• The solar nebula is considered to have evolved in a turbulent state at least during the period when interstellar cloud accreted onto the nebula. We have studied the growth of grains in this turbulent accretion solar nebula, taking account of the supply of interstellar grains due to the accretion. In case of fully developed turbulence, before the supply of interstellar grains affected the evolution of grains, the mean radius of the grains reached 1 cm about 20 to 40 times faster than in the laminar nebula and the spectrum was characterized by an n(m)∝m^<-1.31> power law. The supplied interstellar grains gave rise to new generations of grains and finally made the spectrum nearly steady in a time scale of about 3×10^4yr. The steady spectrum is expressed roughly by n(m)∝m^<-2>. With the calculated spectrum, the Rosseland mean grain opacity was computed. The initial thermal convection was found to decay within a few hundred years. We also discuss the implications of our calculations for planetesimal formation.

• 1989-03-10

著者

• MIZUNO Hiroshi

  Notre Dame Seishin University

• MIZUNO Hiroshi

  Department of Physics, Kyoto University

関連論文

• Chapter 10 Growth of Dust Grains in the Turbulent Solar Nebula : Part IV Physical Processes in the Solar Nebula : Origin of the Solar System
• Tensile Strength of Light Metallic Materials for SST Structures at Elevated Temperatures and After Thermal Aging
• Instability of a Gaseous Envelope Surrounding a Planetary Core and Formation of Giant Planets
• Non-Steady Evolution of the Accretion Disk Solar Nebula
• Chapter 22 Primordial Atmosphere Surrounding a Protoplanet and Formation of Jovian Planets : Part VI Growth of the Planets : Origin of the Solar System
• Formation of the Giant Planets

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