More radial-velocity measurements in young open clusters

Further high resolution radial-velocity measurements are reported in 23 young open clusters using the Kitt Peak CCD coude spectrograph on the 0.9-m feed telescope. The radial velocities for the cluster stars are derived with the technique of cross correlation. The internal precision of the velocity measurements is typically 2 km/s for early type stars. From these new data and previously published velocities, the observed stars in two clusters, NGC 663 and NGC 2287, were found to show a relatively small dispersion in the measured mean velocities. Further observations of stars in young clusters will be useful in helping to establish an early-type-star-velocity standard system.