Radial velocity measurements in the Pleiades

Abstract

view Abstract Citations (40) References (23) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Radial Velocity Measurements in the Pleiades Liu, T. ; Janes, Kenneth A. ; Bania, T. M. Abstract High-resolution radial velocities for 71 stars of both early and late spectral types in the Pleiades cluster have been obtained in order to investigate the possibility of establishing an early-type star velocity system by bootstrapping late-type velocity standards to early-type ones in young clusters. It is shown that in the absence of early-type velocity standards the velocity scale of the early-type spectra in the cluster can be tied into the IAU velocity system by examining the velocity distributions of both the early-type and the late-type stars, since the internal velocity dispersion in an open cluster is less than about 1 km/s. It is found that the cluster velocity of the Pleiades is 6.0 km/s, with an observed velocity dispersion of 1 km/s. Based on these velocity results, a list of potentially constant velocity B and A stars is proposed for further studies to confirm the constancy of their velocities. Publication: The Astrophysical Journal Pub Date: August 1991 DOI: 10.1086/170342 Bibcode: 1991ApJ...377..141L Keywords: Early Stars; Late Stars; Open Clusters; Pleiades Cluster; Radial Velocity; Velocity Measurement; High Resolution; Stellar Spectra; Astrophysics; CLUSTERS: OPEN; RADIAL VELOCITIES full text sources ADS | data products SIMBAD (71)