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dc.contributor.authorVescovi, D.
dc.contributor.authorAbia Ladrón De Guevara, Carlos Antonio
dc.identifier.citationD. Vescovi et. al. Magnetic-buoyancy-induced mixing in AGB stars: Fluorine nucleosynthesis at different metallicities. A&A 652, A100 (2021) [10.1051/0004-6361/202141173].es_ES
dc.descriptionDV and SC acknowledge S. Bagnulo for fruitful discussions. DV acknowledges financial support from the German-Israeli Foundation (GIF No. I-1500-303.7/2019). CA acknowledges financial support from the Agencia Estatal de Investigacion of the Spanish Ministerio de Ciencia e Innovacion through the FEDER founds projects PGC2018-095317-B-C2.es_ES
dc.description.abstractAsymptotic giant branch (AGB) stars are considered to be among the most significant contributors to the fluorine budget in our Galaxy. While observations and theory agree at close-to-solar metallicity, stellar models at lower metallicities overestimate the fluorine production with respect to that of heavy elements. We present F-19 nucleosynthesis results for a set of AGB models with different masses and metallicities in which magnetic buoyancy acts as the driving process for the formation of the C-13 neutron source (the so-called C-13 pocket). We find that F-19 is mainly produced as a result of nucleosynthesis involving secondary N-14 during convective thermal pulses, with a negligible contribution from the N-14 present in the C-13 pocket region. A large F-19 production is thus prevented, resulting in lower fluorine surface abundances. As a consequence, AGB stellar models with mixing induced by magnetic buoyancy at the base of the convective envelope agree well with available fluorine spectroscopic measurements at low and close-to-solar metallicity.es_ES
dc.description.sponsorshipGerman-Israeli Foundation for Scientific Research and Development I-1500-303.7/2019es_ES
dc.description.sponsorshipAgencia Estatal de Investigacion of the Spanish Ministerio de Ciencia e Innovacion through the FEDER founds projects PGC2018-095317-B-C2es_ES
dc.publisherEDP Sciencees_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subjectAGB and post-AGBes_ES
dc.subjectMagnetic field es_ES
dc.subjectMagnetohydrodynamics (MHD)es_ES
dc.subjectNuclear reactions es_ES
dc.titleMagnetic-buoyancy-induced mixing in AGB stars: Fluorine nucleosynthesis at different metallicitieses_ES

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Atribución-NoComercial-SinDerivadas 3.0 España
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 España