Conservation of angular momentum for the wind accretion of extrinsic AGB stars.

Details Conservation of angular momentum for the wind accretion of extrinsic AGB stars. Conservation of angular momentum for the wind accretion of extrinsic AGB stars.

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998acasn..39..424z&link_type=abstract

Acta Astron. Sin., Vol. 39, No. 4, p. 424 - 429

Astronomy and Astrophysics

Astronomy

1

Agb Stars: Stellar Winds, Agb Stars: Accretion, Cataclysmic Binaries: Stellar Winds

Scientific paper

The equations of wind accretion and variations of orbital parameters are rededuced in the condition of the conservation of total angular momentum instead of the tangential momentum. Subsequently, for the extrinsic AGB stars, the wind mass accretion and variations of orbital parameters are calculated, and their heavy element overabundances are also computed in a consistent way. The authors combine the wind accretion model with the nucleosynthesis of the intrinsic AGB stars and adopt the model of progressive pulses and mixing. The calculated results are compared with observations.

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