Astron. Astrophys. 364, 723-731 (2000)

Acknowledgements

We wish to thank the night assistants of Observatoire de Haute Provence for their help during the observations. We are also grateful to C. Reynaud, O. Guillois and G. Ledoux for useful discussions and to the referee, Prof. A. Witt, for helpful comments.

© European Southern Observatory (ESO) 2000

Online publication: January 29, 2001
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