Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...211..409i&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 211, no. 2, March 1989, p. 409-412.
Astronomy and Astrophysics
Astrophysics
18
Astronomical Models, Hydrodynamics, Interstellar Matter, Planetary Nebulae, Shock Wave Propagation, Bubbles, Red Giant Stars, Stellar Envelopes, Stellar Evolution, Stellar Winds
Scientific paper
The aims of this note are: (1) apply a dynamical model for the formation of aspherical planetary nebulae to an extreme case thereof namely the 'Calabash Nebula' OH 231.8 + 4.2; (2) predict, in first approximation, the isovelocity images of this object. The model consists of a wind-driven shock propagating through a cylindrical symmetric fossil red giant envelope. In order to verify whether the predictions are likely to be correct, they are compared with known isovelocity images of butterfly-type planetary nebulae.
Icke Vincent
Preston Heather L.
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