Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ap%26ss.211..179g&link_type=abstract
Astrophysics and Space Science, vol. 211, no. 2, p. 179-193
Astronomy and Astrophysics
Astrophysics
1
Dynamic Models, Images, Planetary Nebulae, Stellar Envelopes, Magnetic Fields, Shapes, Stability, Structural Analysis
Scientific paper
A number of criteria are elaborated based on the the careful analysis of nebulae images which confirm the version of the orgin of double-envelope planetary nebulae by means of dynamical separation but not by multiple ejection. The importance of stellar winds in the origin of the gigantic halos around double envelope nebulae is outlined. The problem concerning the existence of two types of filamentary planetary nebulae is raised: type A, filaments are the fragmentations of the 'Rayleigh-Taylor instability', the result of dynamical interaction of the envelope with the outer interstellar matter (NGC 6543), and type B, the orgin of filaments is connected with the 'Magnetic field fluctuations' (A 43, A 72). The possibility of the origin of three-envelope nebulae in the framework of the dynamic seperation version is discussed (NGC 7293). Attention is paid to the impossibility of outbursts with low velocities (20 to 30 km/sec) from hot stars, i.e., the nuclei of nebulae.
No associations
LandOfFree
The dynamics of double-envelope planetary nebulae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The dynamics of double-envelope planetary nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The dynamics of double-envelope planetary nebulae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-865286