Grains accretion processes in a proto-planetary nebula. II - Accretion time and mass limit

Details Grains accretion processes in a proto-planetary nebula. II - Accretion time and mass limit Grains accretion processes in a proto-planetary nebula. II - Accretion time and mass limit

May 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ap%26ss..48...79c&link_type=abstract

Astrophysics and Space Science, vol. 48, no. 1, May 1977, p. 79-87.

Astronomy and Astrophysics

Astrophysics

17

Astronomical Models, Nebulae, Planetary Evolution, Cosmic Dust, Mass Distribution

Scientific paper

Some mechanisms which are expected to produce the growth of dust grains in the proto- solar nebula are studied during the isothermal and the adiabatic phase of the gravitational collapse. Owing to the low sticking efficiency in the grain-grain collisions and also to the impossibility of gas capture by solid particles in the physical environment considered, the main result is the production in about 106 yr of a set of particles similar in mass. The obtained mass limit (1O_8_1O_9 g) depends on the physical properties of the grains, and seems to be independent of the turbulence model used for the gas motion

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