More radial-velocity measurements in young open clusters

Details More radial-velocity measurements in young open clusters More radial-velocity measurements in young open clusters

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....102.1103l&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 102, Sept. 1991, p. 1103-1107.

Astronomy and Astrophysics

Astronomy

35

B Stars, O Stars, Open Clusters, Radial Velocity, Stellar Spectra, Velocity Measurement, A Stars, Charge Coupled Devices

Scientific paper

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.

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