Detailed abundances in stars belonging to ultra-faint dwarf spheroidal galaxies

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dc.catalogadoryvc
dc.contributor.authorFrançois, P.
dc.contributor.authorMonaco, L.
dc.contributor.authorVillanova, S.
dc.contributor.authorCatelan, Márcio
dc.contributor.authorBonifacio, P.
dc.contributor.authorBellazzini, M.
dc.contributor.authorMoni Bidin, C.
dc.contributor.authorMarconi, G.
dc.contributor.authorGeisler, D.
dc.contributor.authorSbordone, L.
dc.date.accessioned2024-02-28T13:37:35Z
dc.date.available2024-02-28T13:37:35Z
dc.date.issued2012
dc.description.abstractWe report preliminary results concerning the detailed chemical composition of metal poor stars belonging to close ultra-faint dwarf galaxies (hereafter UfDSphs). The abundances have been determined thanks to spectra obtained with X-Shooter, a high efficiency spectrograph installed on one of the ESO VLT units. The sample of ultra-faint dwarf spheroidal stars have abundance ratios slightly lower to what is measured in field halo star of the same metallicity. We did not find extreme abundances in our Hercules stars as the one found by Koch for his 2 Hercules stars. The synthesis of the neutron capture elements Ba and Sr seems to originate from the same nucleosynthetic process in operation during the early stages of the galactic evolution....
dc.fuente.origenORCID
dc.identifier.doi10.1063/1.4763453
dc.identifier.urihttps://doi.org/10.1063/1.4763453
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/81376
dc.information.autorucInstituto de Astrofísica ; Catelan, Márcio ; 0000-0001-6003-8877 ; 1001556
dc.language.isoen
dc.rightsacceso abierto
dc.titleDetailed abundances in stars belonging to ultra-faint dwarf spheroidal galaxies
dc.typepreprint
sipa.codpersvinculados1001556
sipa.trazabilidadORCID;2024-01-22
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