Snapshots of eight SA and standard fields from low to high galactic latitudes were made using the KPNO 0.9m 2K × 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.

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