Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1001..295w&link_type=abstract
IXTH TORINO WORKSHOP ON EVOLUTION AND NUCLEOSYNTHESIS IN AGB STARS AND THE IIND PERUGIA WORKSHOP ON NUCLEAR ASTROPHYSICS. AIP C
Astronomy and Astrophysics
Astrophysics
2
Giant And Subgiant Stars, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages, Abundances, Chemical Composition, Magnetohydrodynamics And Plasmas, Thermodynamic Processes, Conduction, Convection, Equations Of State
Scientific paper
The possible role of magnetic flux tubes in transporting matter from near the H shell through the radiative zone and into the convective envelope is explored. It is shown that the required rates of mass transport necessary to provide nuclear processed material to the envelope can be achieved if large magnetic fields are present just above the H shell in AGB and RGB stars. The required fields in this zone reach 5 MG for the AGB case and 0.5-0.05 MG for the RGB case. It may thus be possible that magnetic bouyancy play a major role in providing the extra mixing needed for these stars.
Busso Maurizio
Wasserburg Gerald J.
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