From UBVRI photometry and space motion data of 232 late type dwarf stars, it is found that for the stars of (R-I)<0.5, Δ (U-B) and Δ (B-V) color excesses are correlated with their orbital eccentricities. Therefore, Δ (U-B) and Δ (B-V) color excesses can be used as possible photometric abundance indicators for the stars of (R-I)<0.5. For the stars of (R-I) ≥ 0.5, the correlation between color excess and orbital eccentricity is not clear. However, it is interesting to note that the high orbital eccentricity stars show some blue deficiencies and these blue deficiencies seem to be correlated with orbital eccentricity.

ABSTRACT
Ⅰ. INTRODUCTION
Ⅱ. OBSERVATIONAL DATA
Ⅲ. ANALYSIS AND DISCUSSION
Ⅳ. CONCLUSION
REFERENCES

• SANG-GAK LEE(Department of Astronomy, Seoul National University)