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Magnetic Bubbles and Extramixing in Stars

Wasserburg, Gerald J. and Busso, Maurizio (2008) Magnetic Bubbles and Extramixing in Stars. In: Torino Workshop on Evolution and Nucleosynthesis in AGB Stars, 9th, and the Perugio Workshop on Nuclear Astrophysics, 2nd, 21–27 October 2007, Italy. AIP Conference Proceedings. No.1001. American Institute of Physics , Melville, NY, pp. 295-305. ISBN 978-0-7354-0520-2.

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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.

Item Type:Book Section
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URLURL TypeDescription
Wasserburg, Gerald J.0000-0002-7957-8029
Additional Information:© 2008 American Institute of Physics. Issue Date: April 6, 2008. GJW acknowledges the support of DOE-FG03-88ER13851, the generosity of the Epsilon foundation, and Caltech's contribution 9003(1124). M.B. thanks support from the Italian Ministry of research, through the contract PRIN2006-022731.
Funding AgencyGrant Number
Department of Energy (DOE)FG03-88ER13851
Epsilon FoundationUNSPECIFIED
Ministero dell'istruzione, dell'università e della ricerca (MIUR)PRIN2006-022731
Subject Keywords:magnetic bubbles, giant stars, stellar evolution, chemical analysis, magnetohydrodynamics, convection
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Caltech Division of Geological and Planetary Sciences9003
Lunatic Asylum Lab1124
Series Name:AIP Conference Proceedings
Issue or Number:1001
Record Number:CaltechAUTHORS:WASaipcp08
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10097
Deposited By: Archive Administrator
Deposited On:12 Apr 2008
Last Modified:03 Oct 2019 00:06

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