Investigation of a sample of carbon-enhanced metal-poor stars observed with FORS and GMOS

Vista sencilla de ítem
dc.contributor.authorCaffau, E.
dc.contributor.authorGallagher, A.J.
dc.contributor.authorBonifacio, P.
dc.contributor.authorSpite, M.
dc.contributor.authorDuffau, S.
dc.contributor.authorSpite, F.
dc.contributor.authorMonaco, L.
dc.contributor.authorSbordone, L.
dc.date.accessioned2019-06-19T20:00:37Z
dc.date.available2019-06-19T20:00:37Z
dc.date.issued2018-06
dc.descriptionIndexación: Scopuses_ES
dc.description.abstractAims. Carbon-enhanced metal-poor (CEMP) stars represent a sizeable fraction of all known metal-poor stars in the Galaxy. Their formation and composition remains a significant topic of investigation within the stellar astrophysics community. Methods. We analysed a sample of low-resolution spectra of 30 dwarf stars, obtained using the visual and near UV FOcal Reducer and low dispersion Spectrograph for the Very Large Telescope (FORS/VLT) of the European Southern Observatory (ESO) and the Gemini Multi-Object Spectrographs (GMOS) at the GEMINI telescope, to derive their metallicity and carbon abundance. Results. We derived C and Ca from all spectra, and Fe and Ba from the majority of the stars. Conclusions. We have extended the population statistics of CEMP stars and have confirmed that in general, stars with a high C abundance belonging to the high C band show a high Ba-content (CEMP-s or -r/s), while stars with a normal C abundance or that are C-rich, but belong to the low C band, are normal in Ba (CEMP-no). © ESO 2018.es_ES
dc.description.urihttps://www.aanda.org/articles/aa/abs/2018/06/aa32475-17/aa32475-17.html
dc.identifier.citationAstronomy and Astrophysics, 614, art. no. A68.es_ES
dc.identifier.issn0004-6361
dc.identifier.otherDOI: 10.1051/0004-6361/201732475
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/9238
dc.language.isoenes_ES
dc.publisherEDP Scienceses_ES
dc.subjectGalaxy: abundanceses_ES
dc.subjectGalaxy: formationes_ES
dc.subjectGalaxy: haloes_ES
dc.subjectStars: abundanceses_ES
dc.subjectStars: Population IIes_ES
dc.titleInvestigation of a sample of carbon-enhanced metal-poor stars observed with FORS and GMOSes_ES
dc.typeArtículoes_ES
Archivos
Bloque original
Mostrando 1 - 1 de 1
Miniatura
Nombre:
Caffau_Investigation_of_a_sample.pdf
Tamaño:
481.59 KB
Formato:
Adobe Portable Document Format
Descripción:
TEXTO COMPLETO EN INGLES
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FCE - Artículos de Revista