DID PLANET FORMATION BEGIN INSIDE PERSISTENT GASEOUS VORTICES?

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Accepted in A&A - 4 pages - LaTex - 2 figures on request

Scientific paper

We explore here the idea, reminiscent in some respect of Von Weizsacker's (1944) and Alfven's (1976) outmoded cosmogonies, that long-lived vortices in a turbulent protoplanetary nebula can capture large amount of solid particles and initiate the formation of planets. Some puzzling features of the solar system appear as natural consequences of our simple model: - The captured mass presents a maximum near Jupiter's orbit. - Outside this optimal orbit, the collected material, mainly composed of low density particles, sinks deeply into the vortices and rapidly collapses into massive bodies at the origin of the solid core of the giant planets. - Inside this orbit, by contrast, the high density particles are preferentially selected by the vortices and assembled by local gravitational instabilities into planetesimals, massive enough to be released by the vortices and to grow later, in successive collisions, to form the terrestrial planets. - The captured mass presents a maximum near Jupiter's orbit. - Outside this optimal orbit, the collected material, mainly composed of low density particles, sinks deeply into the vortices and rapidly collapses into massive bodies at the origin of the solid core of the giant planets. - Inside this orbit, by contrast, the high density particles are preferentially selected by the vortices and assembled by local gravitational instabilities into planetesimals, massive enough to be released by the vortices and to grow later, in successive collisions, to form the terrestrial planets.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

DID PLANET FORMATION BEGIN INSIDE PERSISTENT GASEOUS VORTICES? 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 DID PLANET FORMATION BEGIN INSIDE PERSISTENT GASEOUS VORTICES?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DID PLANET FORMATION BEGIN INSIDE PERSISTENT GASEOUS VORTICES? will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-719491

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.