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Forming the Dusty Ring in HR 4796A

Scott J. Kenyon·Kenneth Wood·Barbara A. Whitney·Michael J. Wolff
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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 of width 7-15 AU and height 0.3-0.6 AU at 70 AU in roughly 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.

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Scott J. Kenyon, Kenneth Wood, Barbara A. Whitney, Michael J. Wolff. 1999-08-11. Forming the Dusty Ring in HR 4796A. https://doi.org/10.1086/312313

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