The Surface Density Distribution in the Solar Nebula

Details The Surface Density Distribution in the Solar Nebula The Surface Density Distribution in the Solar Nebula

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...627l.153d&link_type=abstract

The Astrophysical Journal, Volume 627, Issue 2, pp. L153-L155.

Astronomy and Astrophysics

Astronomy

29

Accretion, Accretion Disks, Stars: Planetary Systems: Protoplanetary Disks, Solar System: Formation

Scientific paper

The commonly used minimum-mass power-law representation of the early solar nebula is reanalyzed using a new cumulative mass model. This model is a first integral of the planetary data and predicts a smoother surface density approximation compared with methods based on direct computation of surface density. The density is quantified using two independent analytical formulations. First, a best-fit transcendental function is applied directly to the basic planetary data. Next, a solution to the time-dependent disk evolution equation is parametrically adapted to the solar nebula data. The latter model is shown to be a good approximation to the finite-size early solar nebula and, by extension, to extrasolar protoplanetary disks.

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