Forming the dusty ring in HR 4796A

被引：29

作者：

Kenyon, SJ

Wood, K

Whitney, BA

Wolff, MJ

机构：

[1] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA

[2] Space Sci Inst, Boulder, CO 80303 USA

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 524卷 / 02期

基金：

美国国家航空航天局;

关键词：

circumstellar matter; planetary systems; solar system : formation; stars : formation; stars : individual (HR 4796A);

D O I：

10.1086/312313

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We describe planetesimal accretion calculations for the dusty ring observed in the nearby AO star HR 4796A. Models with initial masses of 10-20 times the minimum-mass solar nebula produce a ring with a width of 7-15 AU and a height of 0.3-0.6 AU at 70 AU in similar to 10 Myr. The ring has a radial optical depth of similar to 1. These results agree with limits derived from infrared images and from the excess infrared luminosity.

引用

页码：L119 / L123

页数：5

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