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Article Contents

ABSTRACT

1.INTRODUCTION

2.STAR FORMATION RATES IN RING GALAXIES

3.THE INTERSTELLAR MEDIUM IN RING GALAXIES

3.1.Atomic Hydrogen

3.2.Molecular Gas in the L-S Ring Galaxy

4.STAR FORMATION PROCESSES IN THE RING

4.1.The Role of Gravitational Instabilities

4.2.Evidence for Peculiar Star Formation Laws

4.3.Enhanced Star Formation Efficiencies

5.WHY IS THE MOLECULAR GAS FRACTION SO LOW?

6.SUMMARY AND FUTURE PROSPECTS

REFERENCES