Forming the Dusty Ring in HR 4796A
Open Access
- 20 October 1999
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 524 (2) , L119-L123
- https://doi.org/10.1086/312313
Abstract
We describe planetesimal accretion calculations for the dusty ring observed in the nearby A0 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 ~10 Myr. The ring has a radial optical depth of ~1. These results agree with limits derived from infrared images and from the excess infrared luminosity.Keywords
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