ner_tags: O O O O O O O O O B-Organization I-Organization I-Organization O O B-Grant O O B-Person I-Person O O O B-Person I-Person O O O B-Instrument O O B-CelestialObject I-CelestialObject O B-Person I-Person O B-Person O O O O O O O B-Telescope O O O O O O O O O O O O O O O O B-Person O O O O O O B-Organization B-Fellowship I-Fellowship B-Person O O O O O B-Organization O O O B-Grant O O O O O O B-Archive I-Archive I-Archive I-Archive I-Archive I-Archive B-Instrument O O O O O O B-Organization O B-Grant O B-Person I-Person B-Person I-Person O B-Person I-Person O O O O O O O O B-Person I-Person O B-Person I-Person I-Person I-Person O B-Instrument O O O O O O O O O O O O B-Person I-Person O B-Person I-Person O O O O O O B-Organization O B-Grant B-Person O B-Grant B-Person O O O O O B-Instrument O O O O O B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization O O B-Observatory I-Observatory O O O B-Survey O O O O O O B-Location B-Organization I-Organization I-Organization O B-Location B-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization I-Organization I-Organization O B-Location O B-Organization I-Organization I-Organization I-Organization I-Organization O O B-Location I-Location O B-Organization I-Organization I-Organization I-Organization O B-Location O B-ComputingFacility I-ComputingFacility I-ComputingFacility I-ComputingFacility I-ComputingFacility O O B-Organization I-Organization I-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization I-Organization I-Organization O O B-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization O O B-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization B-Organization I-Organization I-Organization I-Organization I-Organization B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization O B-Organization I-Organization O O B-Organization I-Organization O O B-Survey I-Survey I-Survey O B-Survey O O O O O O O B-Organization I-Organization I-Organization O O O B-Grant O B-Survey O O B-Location O O O O O B-Organization O O B-Grant B-Grant B-Grant O B-Organization I-Organization I-Organization I-Organization I-Organization B-Grant O O O O B-Organization O O O B-Location I-Location O B-Organization I-Organization O B-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization B-Organization I-Organization I-Organization I-Organization B-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization B-Organization I-Organization I-Organization O B-Organization I-Organization O B-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization B-Organization B-Location B-Organization I-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization I-Organization I-Organization B-Organization O B-Organization I-Organization I-Organization I-Organization I-Organization B-Organization I-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization O O O B-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization O B-Observatory I-Observatory I-Observatory I-Observatory O B-Organization I-Organization I-Organization B-Organization I-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization B-Organization I-Organization I-Organization I-Organization B-Organization I-Organization O B-Organization I-Organization I-Organization O B-Organization I-Organization I-Organization O B-Telescope I-Telescope I-Telescope B-Instrument O B-Telescope B-Instrument O B-Telescope B-Instrument O
tokens: This publication is based upon work supported by the National Science Foundation under grant AST-1108811. We thank Dan Kelson for helpful conversations, Anna Frebel for providing the MIKE spectrum of HD 122563, and Becky Canning and Jimmy for helpful conversations on the reduction of VLT spectra. We also thank the anonymous referee for suggestions that improved the presentation of the paper. A.C.R. acknowledges financial support provided by the PAPDRJ. CAPES/FAPERJ Fellowship. F.S. acknowledges financial support provided by CAPES under contract No. 3171-13-2. This research has made use of NASA’s Astrophysics Data System Bibliographic Services. M2FS was built through partial support via NSF/MRI grant AST-0923160 to Mario Mateo, Ian Thompson and Steven Shectman as co-PIs and its construction was assisted by Jeffrey Crane and John I. Bailey III. The M2FS observations used in this paper were carried out on our behalf by Mario Mateo and Matthew Walker, who were supported in part by NSF grants AST-1312967 (MM) and AST-1313045 (MW). Additional partial operational support of M2FS has been provided by the Department of Astronomy of the University of Michigan and by Carnegie Observatories. Funding for the DES Projects has been provided by the U.S. Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University, Financiadora de Estudos e Projetos, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Científico e Tecnológico and the Ministério da Ciência, Tecnologia e Inovação, the Deutsche Forschungsgemeinschaft and the Collaborating Institutions in the Dark Energy Survey. The DES data management system is supported by the National Science Foundation under Grant Number AST-1138766. The DES participants from Spanish institutions are partially supported by MINECO under grants AYA2012-39559, ES2P2013-48274, FPA2013-47986, and Centro de Excelencia Severo Ochoa SEV-2012-0234, some of which include ERDF funds from the European Union. The Collaborating Institutions are Argonne National Laboratory, the University of California at Santa Cruz, the University of Cambridge, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas-Madrid, the University of Chicago, University College London, the DES-Brazil Consortium, the University of Edinburgh, the Eidgenössische Technische Hochschule (ETH) Zürich, Fermi National Accelerator Laboratory, the University of Illinois at Urbana-Champaign, the Institut de Ciències de l’Espai (IEEC/CSIC), the Institut de Física d’Altes Energies, Lawrence Berkeley National Laboratory, the Ludwig-Maximilians Universität München and the associated Excellence Cluster Universe, the University of Michigan, the National Optical Astronomy Observatory, the University of Nottingham, The Ohio State University, the University of Pennsylvania, the University of Portsmouth, SLAC National Accelerator Laboratory, Stanford University, the University of Sussex, and Texas AM University. Facilities: Magellan : Clay (M2FS) , VLT:Kueyen (GIRAFFE) , Gemini:South (GMOS) .