tokens: This paper is based on observations made with ESO telescopes at the La Silla Paranal Observatory under program ID 092.B-0104(A). We have made extensive use of the SIMBAD Database at CDS (Centre de Données astronomiques) Strasbourg, the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, CalTech, under contract with NASA, and of the VizieR catalog access tool, CDS, Strasbourg, France. Support for J.B., D.M., J.C.B., R.K., M.H. is provided by the Ministry of Economy, Development, and Tourism’s Millennium Science Initiative through grant IC120009, awarded to The Millennium Institute of Astrophysics, MAS. Support for R.K. is provided from Fondecyt Reg. No. 1130140. R.K.S. acknowledges support from CNPq/Brazil through project 310636/2013-2. We are grateful to the anonymous referee for useful suggestions that helped to improve the paper.
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