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Issue A&A
Volume 401, Number 2, April II 2003
Page(s) 531 - 541
Section Stellar clusters and associations
DOI http://dx.doi.org/10.1051/0004-6361:20030112



A&A 401, 531-541 (2003)
DOI: 10.1051/0004-6361:20030112

Memberships and CM diagrams of the open cluster NGC $\,$7243

E. G. Jilinski1, 2, 3, V. N. Frolov1, J. K. Ananjevskaja1, J. Straume4 and N. A. Drake2, 5

1  Main Astronomical Observatory, Pulkovo, St. Petersburg, Russia
2  Observatório Nacional/MCT, Rua Gal. Jose Cristino 77, São Cristovão, Rio de Janeiro, Brazil
3  Laboratório Nacional de Computação Científica/MCT, Petropolis, Brazil
4  Radioastrophysical Observatory, Baldone, Riga, Latvia
5  Sobolev Astronomical Institute of St. Petersburg State University, St. Petersburg, Russia

(Received 16 November 1999 / Accepted 6 January 2003)

Abstract
The results of astrometric and photometric investigations of the open cluster NGC $\,$7243 are presented. Proper motions of 2165 stars with root-mean-square error of $1.1\;{\rm mas\,yr^{-1}}$ were obtained by means of PDS scanning of astrometric plates covering 97 years. A total of 211 cluster members down to $V=15.5\;$mag have been identified. V and B magnitudes have been determined for 2118 and 2110 stars respectively. Estimations of mass ( $348~ {M_\odot} \le M_{\rm TOT} \le 522 ~{M_\odot}$), age $(t=2.5\times 10^8\,$yr), distance $(r=698\,$pc) and reddening (EB-V=0.24) of the cluster NGC $\,$7243 have been made.


Key words: open clusters and associations: general -- open clusters and associations: individual: NGC $\,$7243

Offprint request: E. G. Jilinski, jilinski@on.br

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