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Issue A&A
Volume 446, Number 3, February II 2006
Page(s) 949 - 953
Section Galactic structure, stellar clusters and populations
DOI http://dx.doi.org/10.1051/0004-6361:20052741

A&A 446, 949-953 (2006)
DOI: 10.1051/0004-6361:20052741

Proper motion determination of open clusters based on the UCAC2 catalogue

W. S. Dias1, 2, M. Assafin3, V. Flório1, B. S. Alessi and V. Líbero1

1  Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369, São Carlos 13560-970, SP, Brazil
    e-mail: wilton@univap.br
2  IP&D, UNIVAP, Av. S. Hifumi 2911, São José dos Campos, 12244-000, SP, Brazil
3  Observatório do Valongo, UFRJ, Ladeira Pedro Antonio 43, 20080-090 Rio de Janeiro, RJ, Brazil

(Received 21 January 2005 / Accepted 16 September 2005 )

Abstract
We present the kinematics of hundreds of open clusters, based on the UCAC2 Catalogue positions and proper motions. Membership probabilities were obtained for the stars in the cluster fields by applying a statistical method uses stellar proper motions. All open clusters with known distance were investigated, and for 75 clusters this is the first determination of the mean proper motion. The results, including the DSS images of the cluster's fields with the kinematic members marked, are incorporated in the Open Clusters Catalogue supported on line by our group.


Key words: Galaxy: open clusters and associations: general

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