SPH Models of Proto-Planetary Nebulae

Details SPH Models of Proto-Planetary Nebulae SPH Models of Proto-Planetary Nebulae

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001assl..265..205g&link_type=abstract

Post-AGB Objects as a Phase of Stellar Evolution, Proceedings of the Toruń Workshop held July 5-7, 2000. Edited by R. Szczerba a

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present preliminary models of proto-planetary nebulae in binary systems. The term proto-planetary nebula denotes here an object several tens of AU across, resulting from the interaction between primary's slow and dense wind, and the gravitational field of the secondary. A significant flattening of the originally spherical density distribution of the wind is easily achieved in rather close binaries (a of a few AU). A fast and rarefied wind propagating through such a medium should naturally develop a bipolar structure. We find that it is also possible to obtain a flattened proto-planetary nebula in a wide binary, provided that the dense wind is either very efficiently cooled or its original velocity is very low.

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