Astron. Astrophys. 359, 113-130 (2000)

Acknowledgements

We thank Francesco Palla for fruitful discussions during the 5th French-Italian meeting in the island of Ponza, and the referee Fred Walter for his useful remarks. NG is supported by the European Union (Marie Curie Individual grant; HPMF-CT-1999-00228). EDF is partially supported by NASA contract NAS8-38252. We used SIMBAD maintained by the CDS (Strasbourg Observatory, France). We also used photographic data obtained using The UK Schmidt Telescope: original plate material is copyright of the ROE and the AAO.

© European Southern Observatory (ESO) 2000

Online publication: June 30, 2000
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