Gravitational instabilities in a dust-gas layer and formation of planetesimals in the solar nebula

Details Gravitational instabilities in a dust-gas layer and formation of planetesimals in the solar nebula Gravitational instabilities in a dust-gas layer and formation of planetesimals in the solar nebula

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pthph..69.1116s&link_type=abstract

Progress of Theoretical Physics, Vol. 69, No. 4, pp. 1116-1130

Physics

61

Scientific paper

Dust particles which are initially distributed homogeneously in the solar nebula aggregate and settle towards the equatorial plane. As a result, the solar nebula separate into three layers: an equatorial thin dust-gas layer and two residual gas layers. We study gravitational instabilities in the dust-gas layer on the assumption of axial symmetry, taking account of motions perpendicular to as well as parallel to the equatorial plane and also making use of proper boundary conditions between the dust-gas layer and the gas layers.
As far as radii of dust particles are sufficiently small (<˜ 1cm at 1 au), a dust fluid and a gas fluid are firmly coupled owing to the drag force; consequently, they behave like one fluid. It is also found that the dust-gas layer behaves like an incompressible fluid owing to high pressure of the gas layers exerted on the dust-gas layer. Taking these conditions into account, a mode of gravitational instability accompanied with a motion perpendicular to the equatorial plane is newly found. If unstable wavelengths of the largest growing rate for non-axisymmetric and axisymmetric perturbations are the same, typical masses of planetesimals are 4×1017 g at the Earth orbit, 3×1020 g at the Jupiter orbit and 4×1021 g at the Neptune orbit.

Affiliated with

Also associated with

No associations

Rating

Gravitational instabilities in a dust-gas layer and formation of planetesimals in the solar nebula does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Gravitational instabilities in a dust-gas layer and formation of planetesimals in the solar nebula, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational instabilities in a dust-gas layer and formation of planetesimals in the solar nebula will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1236168