1999/09/20 by M. A. Guerrero, Martin A. Guerrero, Guerrero, Martin A.
Physics and Astronomy · #Astro and Planetary Science #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #History and Developments in Astronomy #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9909337
8 pages, 1 figure, to appear in ``Asymmetrical Planetary Nebulae II: from Origins to Microstructures,'' ASP Conference Series, J.H. Kastner, N. Soker, & S.A. Rappaport, eds
arxiv created 1999/09/20 · openalex publication_date 1999/09/20 · arxiv updated 2009/12/01 · openalex created_date 2020/03/13 · openalex updated_date 2026/07/28
The discovery of collimated outflows associated to point-symmetric features\nin Planetary Nebulae has proliferated in recent years. The systematic variation\nof radial velocity that many of them show strongly suggests a uniform rotation\nor precession of the ejection direction. Although several physical processes\nhave been invoked, the formation mechanism of precessing collimated outflows in\nPNe is currently an intriguing but unresolved problem.\n