Investigation of the Pleiades cluster. I - Radial velocities of corona stars

Details Investigation of the Pleiades cluster. I - Radial velocities of corona stars Investigation of the Pleiades cluster. I - Radial velocities of corona stars

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...255..130r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 255, no. 1-2, p. 130-138.

Astronomy and Astrophysics

Astronomy

40

Pleiades Cluster, Radial Velocity, Stellar Coronas, Stellar Motions, Color-Magnitude Diagram, Sky Surveys (Astronomy), Space Observations (From Earth), Star Distribution

Scientific paper

Coravel radial velocities of 83 stars ranging in spectral types from F5 to K0 selected frozen van Leeuwen's et al. (1986) survey of the corona of the Pleiades show that only 56 are actually members. Six spectroscopic binaries among the members and two among the nonmembers have been found. The large extent of the cluster over the sky also induces a radial-velocity gradient from which a convergent point has been determined. Since the cluster's depth is so large, the width of the main sequence is increased. The present results lead to a star density of 1.1 stars per sq deg for r between 2.5 and 3.5 deg. However, we stress that this is only a preliminary result, since the sample of stars in the corona is incomplete.

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