Journal of The Korean Astronomical Society (천문학회지)

The Korean Astronomical Society (한국천문학회)
권호 표지

CCD SNAPSHOTS OF FIELDS IN A STUDY OF THE VERTICAL DISTRIBUTION OF STARS

  • CHEN ALFRED B. (Institute of Astronomy, National Central University) ;
  • TSAY WEAN-SHUN (Institute of Astronomy, National Central University) ;
  • LU PHILLIP K. (Center for Galactic Astronomy, Western Connecticut State University) ;
  • SMITH ALLYN (Florida Institute of Technology) ;
  • MENDEZ RENE (European Southern Observatory)
  • Published : 1996.12.01
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Abstract

Snapshots of eight SA and standard fields from low to high galactic latitudes were made using the KPNO 0.9m 2K $\times$ 2K CCD with a limiting magnitude from 19 to 22.5. The purpose of this study is to determine the vertical distribution of stars with respect to Galactic latitude and z-distance in comparison with the model simulation between intermediate population to the 'thick disk' component of scale height of a few kpc. Comparison of the preliminary results between observed and model simulation for 3 of the S fields shows good agreement both in V-mag and B- V color distributions. A bimodal distribution in B- V at high galactic latitude seems to be represented by a halo and 'thick disk' dwarf in the blue and by a normal disk dwarf population in the red.

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