Astron. Astrophys. 336, 823-828 (1998)

Acknowledgements

We are gratefully indebted to the ESO staff at La Silla, particularly P. Prado, for assistance during the adaptive optics observations. We warmly thank as well D. Bonaccini, E. Gendron, F. Lacombe and J.P. Veran for useful discussions.

© European Southern Observatory (ESO) 1998

Online publication: July 27, 1998
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