Interacting winds and the shaping of planetary nebulae

Journal Article · Sat Apr 01 04:00:00 EST 1989 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/167294· OSTI ID:5856435

Soker, N; Livio, M

Using 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. 36 refs.

• Research Organization: Virginia Univ., Charlottesville (USA); Technion - Israel Institute of Technology, Haifa
• OSTI ID: 5856435
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 339; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINARY STARS
DENSITY
ERUPTIVE VARIABLE STARS
FLUID MECHANICS
HYDRODYNAMICS
MECHANICS
MORPHOLOGY
MOTION
NEBULAE
PHYSICAL PROPERTIES
PLANETARY NEBULAE
ROTATION
SHOCK WAVES
STAR EVOLUTION
STARS
STELLAR ACTIVITY
STELLAR WINDS
SUPERNOVAE
VARIABLE STARS
VELOCITY