Heavy Element Abundances in Giant Stars of 47 Tuc

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dc.creatorWylie, E. C.
dc.creatorCottrell, P. L.
dc.creatorSneden, C. A.
dc.creatorLattanzio, J. C.
dc.date2006-05-21
dc.date.accessioned2026-07-07T10:39:03Z
dc.date.available2026-07-07T10:39:03Z
dc.descriptionThis research forms part of an investigation into heavy element abundances in Asymptotic Giant Branch (AGB) stars in various stellar environments. Seven giant stars in the southern globular cluster 47 Tuc have been observed using the Anglo-Australian Telescope. Abundances for five s- and r- process elements have been determined: the light s-process elements, Y and Zr; the heavy s-process elements, La and Nd; and the r-process element Eu. Mean enhancements in the light s-process, [ls/Fe], of ~+0.6 dex and heavy s-process elements, [hs/Fe], of ~+0.3 dex were determined for all the giant stars. There was no statistically significant difference between the abundances determined for the Red Giant Branch (RGB) and AGB stars in this study. The results for the RGB stars differ from those obtained by a number of previous studies. However, because of the similar abundance results obtained for the AGB and RGB stars in this study we believe this provides evidence for previous enrichment of the material from which these stars formed.
dc.identifierhttps://arxiv.org/abs/astro-ph/0605538
dc.identifierhttp://arxiv.org/abs/astro-ph/0605538
dc.identifierAstrophys.J.649:248-257,2006
dc.identifierdoi:10.1086/505593
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180895
dc.subjectAstrophysics
dc.titleHeavy Element Abundances in Giant Stars of 47 Tuc
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