@article{6b64ff2b88ed4f2e991ac90d53555f1e,
title = "Investigation of a sample of carbon-enhanced metal-poor stars observed with FORS and GMOS",
abstract = "Aims. 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).",
keywords = "Galaxy: abundances, Galaxy: formation, Galaxy: halo, Stars: abundances, Stars: Population II",
author = "E. Caffau and Gallagher, {A. J.} and P. Bonifacio and M. Spite and S. Duffau and F. Spite and L. Monaco and L. Sbordone",
note = "Funding Information: Acnowledgements. This research has made use of the services of the ESO Science Archive Facility. AJG acknowledges the support of the Collaborative Research Centre SFB 881 (Heidelberg University) of the Deutsche Forschungsgemein-schaft (DFG, German Research Foundation). S.D. acknowledges support from Comit{\'e} Mixto ESO-GOBIERNO DE CHILE. Funding Information: ★★Based on observations obtained at the Gemini Observatory (processed using the Gemini IRAF package), which is operated by the Association of Universities for Research in Astronomy, Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership: the National Science Foundation (United States), the National Research Council (Canada), CONICYT (Chile), Ministerio de Ciencia, Tecnolog{\'i}a e Innovaci{\'o}n Productiva (Argentina), and Minist{\'e}rio da Ci{\^e}ncia, Tecnologia e Inova{\c c}{\~a}o (Brazil). Publisher Copyright: {\textcopyright} ESO 2018.",
year = "2018",
month = jun,
day = "1",
doi = "10.1051/0004-6361/201732475",
language = "English",
volume = "614",
journal = "Astronomy and Astrophysics",
issn = "0004-6361",
publisher = "EDP Sciences",
}