Based on observations obtained at the ESO VLT for Large Programme 171.D-0004.

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Appendices A-C are only available in electronic form at http://www.aanda.org

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... project

http://ezzelino.ifa.hawaii.edu/~bresolin/Araucaria/index.html

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... IRAF

IRAF is distributed by the National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under cooperative agreement with the National Science Foundation.

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...(Evans et al. 2006)

These spectra were obtained in the VLT-FLAMES survey of massive stars in the Milky Way and the Magellanic Clouds (http://star.pst.qub.ac.uk/~sjs/flames/).

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