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.
https://resolver.caltech.edu/CaltechAUTHORS:WASaipcp08
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Abstract
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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| 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. |
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| Funders: | | Funding Agency | Grant Number |
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| Department of Energy (DOE) | FG03-88ER13851 | | Epsilon Foundation | UNSPECIFIED | | Caltech | 9003(1124) | | Ministero dell'istruzione, dell'università e della ricerca (MIUR) | PRIN2006-022731 |
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| Subject Keywords: | magnetic bubbles, giant stars, stellar evolution, chemical analysis, magnetohydrodynamics, convection |
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| Other Numbering System: | | Other Numbering System Name | Other Numbering System ID |
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| Caltech Division of Geological and Planetary Sciences | 9003 | | Lunatic Asylum Lab | 1124 |
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| Series Name: | AIP Conference Proceedings |
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| Issue or Number: | 1001 |
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| Record Number: | CaltechAUTHORS:WASaipcp08 |
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| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:WASaipcp08 |
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| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
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| ID Code: | 10097 |
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| Collection: | CaltechAUTHORS |
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| Deposited By: |
Archive Administrator
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| Deposited On: | 12 Apr 2008 |
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| Last Modified: | 03 Oct 2019 00:06 |
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