A minimum-mass extrasolar nebula

被引：56

作者：

Kuchner, MJ ^{[1
]}

机构：

[1] Princeton Univ Observ, Princeton, NJ 08544 USA

来源：

ASTROPHYSICAL JOURNAL | 2004年 / 612卷 / 02期

关键词：

planetary systems : protoplanetary disks; solar system : formation;

D O I：

10.1086/422577

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 (a/1 AU)(-beta) g cm(-2), where a is the circumstellar radius and beta = 2.0 +/- 0.5. The minimum-mass solar nebula (beta = 1.5) is consistent with this model, but the uniform-alpha accretion disk model (beta approximate to 1) is not. In a nebula with beta > 2, the center of the disk is the likely cradle of planet formation.

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收藏

页码：1147 / 1151

页数：5

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