Internal motions in the Pleiades cluster.

Details Internal motions in the Pleiades cluster. Internal motions in the Pleiades cluster.

Sep 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26as..112..229g&link_type=abstract

Astronomy and Astrophysics Supplement, v.112, p.229

Astronomy and Astrophysics

Astrophysics

5

Astrometry, Celestial Mechanics, Stellar Dynamics, (Galaxy:) Open Clusters And Associations: Pleiades

Scientific paper

Precise proper motions of 69 members of the Pleiades have been determined with a median accuracy of 0.4mas/a. We demonstrate that classical reference systems like the PPM are not suited for a reduction of our data. Instead a reduction technique using positions on one reference plate is used. The comparison with two already existing catalogues shows an agreement of better than 1mas/a per star and enables for the first time a determination of the external errors of each catalogue. The external errors of the catalogues are twice as large as the internal errors but are still below the proper motion dispersion of the cluster. From all three catalogues we derive a true proper motion dispersion for the Pleiades of about 1mas/a. No indication of the existence of a velocity anisotropy was found in each catalogue. Such precise proper motions are the prerequisite to study the further dynamical evolution of the Pleiades by n-body simulations.

Affiliated with

Also associated with

No associations

Rating

Internal motions in the Pleiades cluster. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Internal motions in the Pleiades cluster., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Internal motions in the Pleiades cluster. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-821764