A Minimum-Mass Extrasolar Nebula

Details A Minimum-Mass Extrasolar Nebula A Minimum-Mass Extrasolar Nebula

2004-05-27

arxiv.org/abs/astro-ph/0405536v2

Astrophys.J. 612 (2004) 1147-1151

Astronomy and Astrophysics

Astrophysics

15 pages, including 2 figures. To appear in ApJ, 9/04 new version with prettier page layout

Scientific paper

10.1086/422577

By analogy with the minimum-mass solar nebula, we construct a surface-density profile using the orbits of the 26 precise-Doppler planets found in multiple planet systems: Sigma = 2200 grams per square centimeter (a/1 AU)^- beta, where a is the circumstellar radius, and beta = 2.0 plus or minus 0.5. The minimum-mass solar nebula is consistent with this model, but the uniform-alpha accretion disk model is not. In a nebula with beta > 2, the center of the disk is the likely cradle of planet formation.

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