A Minimum‐Mass Extrasolar Nebula
- 10 September 2004
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 612 (2) , 1147-1151
- https://doi.org/10.1086/422577
Abstract
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.Comment: 15 pages, including 2 figures. To appear in ApJ, 9/04 new version with prettier page layouKeywords
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