Forming the Dusty Ring in HR 4796A

Barbara A. Whitney; Kenneth Wood (Harvard-Smithsonian Center for Astrophysics); Michael J. Wolff (Space Science Institute); Scott J. Kenyon

arxiv: astro-ph/9908125 · v1 · submitted 1999-08-11 · 🌌 astro-ph

Forming the Dusty Ring in HR 4796A

Scott J. Kenyon , Kenneth Wood (Harvard-Smithsonian Center for Astrophysics) , Barbara A. Whitney , Michael J. Wolff (Space Science Institute) This is my paper

classification 🌌 astro-ph

keywords ringdustyinfraredaccretionagreecalculationsdepthderived

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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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Forming the Dusty Ring in HR 4796A

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