Based on observations collected at the European Southern Observatory, Cerro Paranal, Chile; ESO program 69.B-0366.

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Appendix A is only available in electronic form at http://www.aanda.org

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... Astronomie

Founded by the merging of the Institut für Astrophysik und Extraterrestrische Forschung, the Sternwarte, and the Radioastronomisches Institut der Universität Bonn.

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... IRAF-environment

IRAF (Image Reduction and Analysis Facility) is distributed by the National Optical Astronomy Observatories, which are operated by the Association of Universities for Research in Astronomy, Inc., under cooperative agreement with the National Science Foundation. (http://iraf.noao.edu/).

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... (NED)

The NASA/IPAC Extragalactic Database (NED) is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.

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