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Erosion of circumstellar particle disks by interstellar dustCircumstellar particle disks appear to be a common phenomenon; however, their properties vary greatly. Models of the evolution of such systems focus on internal mechanisms such as interparticle collisions and Poynting-Robertson drag. Herein it is shown that 'sandblasting' by interstellar dust can be an important and even dominant contributor to the evolution of circumstellar particle disks. Stars spend up to about 3 percent of their main-sequence lifetimes within atomic clouds. Among an IRAS sample of 21 nearby main-sequence A stars, beta Pictoris has the brightest disk; it also possesses the smallest random velocity and therefore the slowest predicted erosion rate.
Document ID
19890050349
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Lissauer, Jack J.
(State Univ. of New York Stony Brook, NY, United States)
Griffith, Caitlin A.
(New York, State University Stony Brook, United States)
Date Acquired
August 14, 2013
Publication Date
May 1, 1989
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 340
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
89A37720
Funding Number(s)
CONTRACT_GRANT: NAGW-1107
Distribution Limits
Public
Copyright
Other

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