We thank J.R. de Medeiros for communicating us rotational velocity measurements obtained with the CORAVEL spectrometer. We used in this work the SIMBAD data base and the Vizier tool operated at the CDS (Strasbourg, France). J.D.N.Jr. acknowledges partial financial support from the CNPq Brazilian Agency.
© European Southern Observatory (ESO) 1998
Online publication: July 27, 1998