J/A+A/320/74 J/A+A/320/74 Radial velocities of Pleiades members J -C Mermilliod P Bratschi P Mayor Astron. Astrophys. 320 74 1997 1997A&A...320...74M Radial velocities open clusters and associations: general open clusters and associations: individual (Pleiades) techniques: radial velocities The analysis of CORAVEL radial velocities of 93 stars selected on the basis of their proper motion and Geneva CCD photometric observations for 57 stars have permitted to identify 25 new members in the outer part of the Pleiades. Several spectroscopic binaries have been discovered, but their membership is not clear. Two orbits with short periods have been determined, but both stars are probably non-members. The total number of member stars in the outer part of the Pleiades in the spectral range F5-K0 (0.45<B-V<0.90) is now 81 which is comparable to the number of stars known in Hertzsprung's central area (88 stars) in the same spectral domain. Therefore at least 48% of the F5-K0 main-sequence stars are located in the outer part of the cluster. And the census is probably still incomplete.

AK Star number from Artjukhina and Kalinina (1970) --- RAh Right ascension (J2000) h RAm Right ascension (J2000) min RAs Right ascension (J2000) s DE- Declination sign --- DEd Declination (J2000) deg DEm Declination (J2000) arcmin DEs Declination (J2000) arcsec Vmag V magnitude (see text) mag [B-V] Geneva CCD [B-V] colour index mag B-V Johnson B-V colour index mag RV Mean radial velocity km/s e_RV Error on the radial velocity km/s N Number of RV observations --- DeltaT Time interval d P(chi2) Probability of non variability --- RVc Computed radial velocity km/s O-C Observed minus Computed km/s Prob Proper-motion membership probability --- Remark Remarks --- Patricia Bauer CDS 1996Sep03Jean-Claude Mermilliod <Jean-Claude.Mermilliod@obs.unige.ch> J_A+A_320_74.xml