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A stellar fly-by simulation giving β Pic's disc asymmetries

Published online by Cambridge University Press:  26 May 2016

John Larwood  and
Paul Kalas
John Larwood
Affiliation:
Queen Mary & Westfield College, Mile End Road, London E1 4NS, UK
Paul Kalas
Affiliation:
University of California, 601 Campbell Hall, Berkeley, CA 94709, USA

Abstract

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We have numerically investigated the dynamics of how a close stellar fly-by encounter of a symmetrical circumstellar planetesimal disc can give rise to the many kinds of asymmetries and substructures attributed to the dusty disc of β Pic. We find three recognizable groupings of test particles that can be related to the morphology of the β Pic disc. These are: highly eccentric and inclined orbit particles that reach apocentre in the southwest, moderately eccentric and inclined orbit particles that reach apocentre in the northeast, and a relatively unperturbed region inside ∽200 AU radius.

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. 353 - 355
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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