Astron. Astrophys. 363, 958-969 (2000)

Acknowledgements

We thank I. García de la Rosa for his assistance with the observations of the second campaign at the IAC80 telescope, and the referee, Dr. G.R. Knapp, for her comments.

This research has made use of the SIMBAD-CDS database, and was partially supported by the Spanish DGES under projects PB95-1132-C02-01 and PB98-0531-C02-02. SR and RP acknowledge the financial support of the Italian Ministry of University, Scientific Research and Technology (MURST) through the grant Cofin98-02-29.

© European Southern Observatory (ESO) 2000

Online publication: December 5, 2000
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