Dust to planetesimals: Settling and coagulation in the solar nebula

The behavior of solid particles in a low-mass solar nebula during settling to the central plane and the formation of planetesimals is discussed. The gravitational instability in a dust layer and collisional accretion are examined as possible mechanisms of planetesimal formation. The shear between the gas and a dust layer is considered along with the differences in the planetesimal formation mechanisms between the inner and outer nebula. A numerical model for computing simultaneous coagulation and settling is described.

[1]  W. Slattery.  Protoplanetary core formation by rain-out of iron drops , 1978 .

[2]  J. Lumley,et al.  A First Course in Turbulence , 1972 .

[3]  F. S. Lai,et al.  The self-preserving particle size distribution for Brownian coagulation in the free-molecule regime , 1972 .

[4]  P. Saffman,et al.  On the stability of laminar flow of a dusty gas , 1962, Journal of Fluid Mechanics.

[5]  S. Weidenschilling.  A model for accretion of the terrestrial planets , 1974 .

[6]  V. Safronov,et al.  Mass distribution of protoplanetary bodies. II - Numerical solution of the generalized coagulation equation , 1976 .

[7]  P. Wesson,et al.  The formation of iron, stone, and mixed planetesimals in the early solar system , 1978 .

[8]  S. Weidenschilling,et al.  Aerodynamics of solid bodies in the solar nebula. , 1977 .

[9]  C. Hayashi,et al.  Growth of Solid Particles in the Primordial Solar Nebula , 1970 .

[10]  F. Whipple.  On certain aerodynamic processes for asteroids and comets , 1972 .

[11]  D. J. Crampin,et al.  Segregation of material with reference to the formation of the terrestrial planets , 1971 .

[12]  D. R. Davies.  ON THE CALCULATION OF EDDY VISCOSITY AND HEAT TRANSFER IN A TURBULENT BOUNDARY LAYER NEAR A RAPIDLY ROTATING DISK , 1959 .

[13]  S. Weidenschilling.  The distribution of mass in the planetary system and solar nebula , 1977 .

[14]  A. Cameron.  Physics of the primitive solar nebula and of giant gaseous protoplanets , 1978 .

[15]  A. Cameron,et al.  Protoplanetary core formation by rain-out of minerals , 1980 .

[16]  Barton Dahneke,et al.  The capture of aerosol particles by surfaces , 1971 .

[17]  C. N. Davies,et al.  CHAPTER 2 – ADHESION OF PARTICLES , 1964 .

[18]  I. P. Williams,et al.  Sedimentation of grains in a solar nebula , 1977 .

[19]  G. Pechernikova.  Mass distribution of protoplanetary bodies. I. Initial data for numerical solution , 1975 .

[20]  P. Goldreich,et al.  The formation of planetesimals. , 1973 .

[21]  W. Hartmann.  Planet formation - Mechanism of early growth , 1978 .

[22]  Iwan P. Williams,et al.  Segregation of materials in cosmogony , 1965, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[23]  G. Hidy,et al.  The dynamics of aerocolloidal systems , 1970 .

[24]  A. Cameron,et al.  Accumulation processes in the primitive solar nebula , 1973 .

[25]  B. K. Kothari,et al.  Laboratory analogues to cosmic dust , 1978 .

[26]  V. Safronov,et al.  Evolution of the protoplanetary cloud and formation of the earth and the planets , 1972 .

[27]  P. Saffman,et al.  On the collision of drops in turbulent clouds , 1956, Journal of Fluid Mechanics.

[28]  C. Hayashi,et al.  The Gas Drag Effect on the Elliptic Motion of a Solid Body in the Primordial Solar Nebula , 1976 .

[29]  S. Chandrasekhar.  Hydrodynamic and Hydromagnetic Stability , 1961 .

[30]  William K. Hartmann,et al.  Planetesimals to planets: Numerical simulation of collisional evolution , 1978 .

[31]  Barton Dahneke,et al.  The influence of flattening on the adhesion of particles , 1972 .

[32]  P. Fraundorf,et al.  Microcharacterization of 'Brownlee' particles - Features which distinguish interplanetary dust from meteorites , 1979 .

[33]  A. Coradini,et al.  Time evolution of grains in the protosolar nebula , 1980 .

[34]  Barton Dahneke,et al.  Further measurements of the bouncing of small latex spheres , 1975 .