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Interacting winds and the shaping of planetary nebulaeUsing two-dimensional hydrodynamics, the problem of shaping of planetary nebulae by the interacting winds model is studied. The shock structure is obtained and it is shown that interacting winds are capable of producing morphologies similar to the ones observed in planetary nebulae, provided that a density contrast exists between the equatorial and polar directions. This confirms recent suggestions by Balick. Mechanisms that can produce the required density contrast are discussed and it is shown that binary central stars provide the most natural mechanism, especially via common envelope evolution. It is not yet entirely clear whether stellar rotation is sufficient to generate the required contrast in the case of single central stars.
Document ID
19890048878
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Soker, Noam
(Virginia, University Charlottesville, United States)
Livio, Mario
(Technion - Israel Institute of Technology Haifa, United States)
Date Acquired
August 14, 2013
Publication Date
April 1, 1989
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 339
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
89A36249
Funding Number(s)
CONTRACT_GRANT: NAGW-764
Distribution Limits
Public
Copyright
Other

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