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A Model of Stochastic Collisions as the Cause of Clumps in Debris Disks

Published online by Cambridge University Press:  26 May 2016

M. C. Wyatt ,
W. R. F. Dent ,
J. S. Greaves  and
W. S. Holland
M. C. Wyatt
Affiliation:
UKATC, Royal Observatory, Edinburgh, EH9 3HJ, UK
W. R. F. Dent
Affiliation:
UKATC, Royal Observatory, Edinburgh, EH9 3HJ, UK
J. S. Greaves
Affiliation:
JAC, 660 North A 'ohoku Place, Hilo, HI 96720, USA
W. S. Holland
Affiliation:
JAC, 660 North A 'ohoku Place, Hilo, HI 96720, USA

Abstract

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We present a heuristic model for the collisional evolution of material in a debris disk. This is used to consider the probability that the 2-3% brightness clump observed in the sub-mm Fomalhaut disk is caused by stochastic collisions between large planetesimals. While this simple model finds that the probability that the clump is caused by collisions is low (about 1 in 80,000), a more detailed model is required to ascertain its true likelihood.

Type
Part IV: Protoplanetary and β Pic disks
Information
Symposium - International Astronomical Union , Volume 202: Planetary Systems in the Universe – Observation, Formation and Evolution , 2004 , pp. 399 - 401
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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