Astron. Astrophys. 318, L67-L70 (1997)

Acknowledgements

We thank A.N. Burenkov for his help during spectral observations with the 6m telescope. JAS, VHC and LKE were partially supported by the research grant No 95-02-04024 from the Russian Foundation for Basic Research. We are indebted to G. Kojoian and N. Andreasian for their help in preparing of this article.

© European Southern Observatory (ESO) 1997

Online publication: July 3, 1998
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