Journal of The Korean Astronomical Society (천문학회지)

The Korean Astronomical Society (한국천문학회)
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UBVI CCD PHOTOMETRY OF THE OPEN CLUSTER NGC559

  • ANN HONG BAE (Division of Science Education, Pusan National University) ;
  • LEE SANG HYUN (Division of Science Education, Pusan National University)
  • Published : 2002.03.01
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Abstract

We have conducted UBVI CCD photometry of an intermediate-age open cluster NGC 559 to investigate the effect of dynamical evolution on the stellar distributions in NGC 559. Our photometry allows better estimates of distance and age of the cluster owing to much deeper photometry (V $\le$ 21) than previous ones. It is found that the luminosity function and mass function as well as the spatial stellar distributions are affected by the dynamical evolution. Mass segregation leads to the central concentration of the high mass stars, which results in the flattened mass function inside the half mass radius.

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