We investigate Hi data for a pair of blue compact dwarf galaxies (BCDs), ESO 435-IG20 and ESO 435-IG16, obtained with the Australia Telescope Compact Array. The outer Hi disk is highly disturbed and asymmetric in both galaxies showing a gas tail and/or a broad/extended gas disk on only one side. Based on their low-density surroundings and small projected distance (<80 kpc) at a similar redshift, we conclude that tidal interaction between these two BCDs is responsible for the morphological and kinematical peculiarities in Hi. We also investigate their star formation rates using Hα and UV imaging data to probe their interaction history.

ABSTRACT
1. INTRODUCTION
2. OBSERVATIONS AND DATA REDUCTION
3. THE Hi MORPHOLOGY AND KINEMATICS
4. STAR FORMATION ACTIVITY AND ITS IMPLICA-TION IN TIDAL INTERACTION HISTORY
REFERENCES

• Jinhyub Kim(Department of Astronomy and Yonsei University Observatory, Yonsei University)
• Eon-Chang Sung(Korea Astronomy and Space Science Institute)
• Aeree Chung(Department of Astronomy and Yonsei University Observatory, Yonsei University)
• Lister Staveley-Smith(International Centre for Radio Astronomy Research, M468, University of Western Australia)