Jet formation in the transition from the asymptotic giant branch to planetary nebulae

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Asymptotic Giant Branch Stars, Companion Stars, Jet Flow, Planetary Nebulae, Stellar Envelopes, Stellar Evolution, Binary Stars, Interstellar Matter, Stellar Mass, Stellar Models, Stellar Winds

Scientific paper

The possibility is studied that during its transition from the AGB to the central star of a PN, a rotating star blows a collimated wind along the symmetry axis. The wind results from the deformation of the stellar surface due to fast rotation. Evolutionary calculations using a spherical stellar model are used to argue that an essential ingredient in the proposed scenario is that the evolving star is in a common envelope with a lower mass companion which spins up the envelope.

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