Investigation of the single neutron exposure model for the s-process: the primary nature of the neutron source

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dc.creatorMa, Kun
dc.creatorCui, W. Y.
dc.creatorZhang, B.
dc.date2007-02-26
dc.date.accessioned2026-07-07T10:21:51Z
dc.date.available2026-07-07T10:21:51Z
dc.descriptionThe primary nature of the $^{13}$C neutron source is very significant for the studies of the s-process nucleosynthesis. In this paper we present an attempt to fit the element abundances observed in 16 s-rich stars using parametric model of the single neutron exposure. The calculated results indicate that almost all s-elements were made in a single neutron exposure for 9 sample stars. Although a large spread of neutron exposure is obtained, the maximum value of the neutron exposure will reach about 7.0 mbarn$^{-1}$, which is close to the theoretical predictions by the AGB model. The calculated result is a significant evidence for the primary nature of the neutron source. Combining the result obtained in this work and the neutron exposure-initial mass relations, a large spread of neutron exposure can be explained by the different initial stellar mass and their time evolution. The possibility that the rotationally induced mixing process can lead to a spread of the neutron exposure in AGB stars is also existent.
dc.description6 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0702677
dc.identifierhttp://arxiv.org/abs/astro-ph/0702677
dc.identifierMon.Not.Roy.Astron.Soc.375:1418-1422,2007
dc.identifierdoi:10.1111/j.1365-2966.2006.11403.x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/175315
dc.subjectAstrophysics
dc.titleInvestigation of the single neutron exposure model for the s-process: the primary nature of the neutron source
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