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Membership and Internal Motions of Faint Stars in the Globular Cluster M 3

Published online by Cambridge University Press:  26 July 2016

R.-D. Scholz  and
N.V. Kharchenko
R.-D. Scholz
Affiliation:
WIP-Projekt Astrometrie bei der Universität Potsdam, Germany
N.V. Kharchenko
Affiliation:
Main Astronomical Observatory of the Ukrainian Academy of Sciences, Kiev, Ukraine

Abstract

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A proper motion study from Tautenburg Schmidt plates is presented for the globular cluster M 3 and its vicinity. The plates were scanned with the Automated Photographic Measuring (APM) system in Cambridge (UK). With a limiting magnitude of B = 21, proper motions of 2 to 3 mas/yr accuracy have been obtained for stars with B < 19. The proper motions were determined applying a stepwise regression method with 3rd order polynomials in the plate-to-plate solutions with about 2000 reference galaxies. We used the results for the determination of membership probabilities and looked for internal motions of M 3.

Type
Part Nine: Galactic Structure
Information
Symposium - International Astronomical Union , Volume 161: Astronomy from Wide-Field Imaging , 1994 , pp. 461 - 463
Copyright
Copyright © Kluwer 1994 

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