Determination of proper motions in the Pleiades cluster

Details Determination of proper motions in the Pleiades cluster Determination of proper motions in the Pleiades cluster

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991an....312..197s&link_type=abstract

Astronomische Nachrichten (ISSN 0004-6337), vol. 312, no. 3, 1991, p. 197-200.

Astronomy and Astrophysics

Astronomy

2

Astrometry, Pleiades Cluster, Stellar Motions, Polynomials, Root-Mean-Square Errors

Scientific paper

For 458 stars in the Pleiades field from the catalog of Eichhorn et al. (1970) proper motions were derived on Tautenburg and CERGA Schmidt telescope plates measured with the automated measuring machine MAMA in Paris. The catalog positions were considered as first epoch coordinates with an epoch difference of ca. 33 years to the observations. The results show good coincidence of proper motions derived with both Schmidt telescopes within the error bars. Comparison with proper motions determined by Vasilevskis et al. (1979) displays some significant differences but no systematic effects depending on plate coordinates or magnitudes could be found. An accuracy of 0.3 arcsec/100a for one proper motion component was estimated. According to the criterion of common proper motion 34 new cluster members were identified.

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