Analysis of USNO-B1 proper motions of stars in open-cluster fields

Details Analysis of USNO-B1 proper motions of stars in open-cluster fields Analysis of USNO-B1 proper motions of stars in open-cluster fields

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26at...24..237m&link_type=abstract

Astronomical and Astrophysical Transactions, vol. 24, Issue 3, p.237-240

Astronomy and Astrophysics

Astronomy

Astrometry, Proper Motions, Open Clusters

Scientific paper

USNO-B1 proper motions for stars in the fields of NGC 457 and ? and h Per open clusters are analyzed and compared to the the proper motions based on plate material taken with normal astrographs. USNO-B1 proper motions in central regions of clusters are found to have large errors due mostly to numerous misidentifications in crowded fields. At the same time, USNO-B1 proper motions for the rest of cluster stars proved to compare fairly well to those inferred in classical astrometric studies. Standard deviations of the proper-motion differences between USNO-B1 and cluster proper-motion studies are found to be on the order of 3.4 4.2masyr-1.

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