Memberships and CM Diagrams of the Open Cluster NGC 7243

2; (2) Observatorio Nacional/MCT; 3); (3) Laboratorio Nacional de Computacao Cientifica/MCT; 5) ((1) Main Astronomical Observatory; (5) Sobolev Astronomical Institute of St. Petersburg State University; Baldone; Brazil; Brazil (4) Radioastrophysical Observatory; E.G. Jilinski (1

arxiv: astro-ph/0212496 · v1 · submitted 2002-12-20 · 🌌 astro-ph

Memberships and CM Diagrams of the Open Cluster NGC 7243

E.G. Jilinski (1 , 2 , 3) , V.N. Frolov (1) , J.K. Ananjevskaja (1) , J. Straume (4) , N.A. Drake (2 , 5) ((1) Main Astronomical Observatory

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Pulkovo St. Petersburg Russia (2) Observatorio Nacional/MCT Rio de Janeiro Brazil (3) Laboratorio Nacional de Computacao Cientifica/MCT Petropolis Brazil (4) Radioastrophysical Observatory Baldone Riga Latvia (5) Sobolev Astronomical Institute of St. Petersburg State University Russia)

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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 mas/yr were obtained by means of PDS scanning of astrometric plates covering the time interval of 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 (348Mo < M < 522Mo), age (t=2.5x10^8 yr), distance (r=698 pc) and reddening (E(B-V)=0.24) of the cluster NGC 7243 have been made.

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Memberships and CM Diagrams of the Open Cluster NGC 7243

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