We are grateful to A. Alonso for the calculations of the color excess in BQ Cnc. The STEPHI program has received financial support from the french CNRS, the spanish DGICYT, the mexican CONACYT and the UNAM, the chinese Academia Sinica and the European Union contract ANTENA. Special thanks are given to the staff of the observatories involved in the campaign. This research has made use of the SIMBAD database operated at CDS, Strasbourg (France). This paper has greatly improved by the clever comments and suggestions of the referee, Dr. E. Paunzen.
© European Southern Observatory (ESO) 1998
Online publication: November 3, 1998