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The β Pictoris Disk: Peculiar or Just Young?

Published online by Cambridge University Press:  12 April 2016

Jack J. Lissauer  and
Dana E. Backman
Jack J. Lissauer
Affiliation:
Space Science Division, MS 245-3, NASA Ames Research Center, Moffett Field, CA 94035, USA
Dana E. Backman
Affiliation:
Physics and Astronomy Department, Franklin and Marshall College, P.O. Box 3003, Lancaster, PA 17604, USA

Abstract

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The star β Pictoris is not in itself very remarkable; however, it is surrounded by a dust disk that is much more prominent than any other main sequence star’s disk. The proximity of β Pic and the nearly edge-on viewing geometry of the disk enhance its appearance, but do not fully account for the disk’s prominence. While it is possible that β Pic’s disk is intrinsically unusual, a more likely explanation is that β Pic is simply a very young (~ 20 Myr old) main sequence star with a consequently denser second-generation debris disk remnant of its protostellar disk than possessed by older main sequence A stars.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 187: Exotic Stars as Challenges to Evolution , 2002 , pp. 309 - 317
Copyright
Copyright © Astronomical Society of the Pacific 2002

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