tokens: L.D.F. acknowledges support through the ESO Studentship Programme, CAPES Programme and CNPq fellowship Programme (166880/2014-0). L.P. acknowledges the Visiting Researcher program of CNPq Brazilian Agency, at the Fed. Univ. of Rio Grande do Norte, Brazil. Support for C.C. is provided by the Ministry for the Economy, Development and Tourism’s Programa Iniciativa Científica do Milênio through grant IC20009, awarded to the Millennium Institute of Astrophysics (MAS). G.F.P.M. acknowledges financial support by CNPq grant 476909/2006-6, FAPERJ grant APQ1/26/170.687/2004 and ESO, for financial support for a trip to Garching, which enabled participation in this work. We thank Dr. Martin Asplund and Dr. Maria Bergemann for their contribution with the line lists used in this work. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France, of NASA’s Astrophysics Data System, of the WEBDA database, operated at the Department of Theoretical Physics and Astrophysics of the Masaryk University, and of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation.
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