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Article Contents

ABSTRACT

1.INTRODUCTION

2.OUTER DISK STRUCTURE FROM COLLAPSE MODELS OF GALAXY FORMATION

3.OUTER DISK STRUCTURE: THREE EXPONENTIAL TYPES

4.OUTER DISK STELLAR POPULATIONS: COLOUR AND AGE GRADIENTS

5.MONO-AGE STRUCTURE OF STELLAR POPULATIONS

6.OUTER DISK STRUCTURE: ENVIRONMENTAL EFFECTS AND THE ROLE OF BULGES AND BARS

7.OUTER DISK STRUCTURE: STAR FORMATION MODELS

8.THE DISKS OF DWARF IRREGULAR GALAXIES
8.1.Radial Trends
8.1.1.The Gas Disk
8.1.2.The Stellar Disk
8.2.Star Formation in Dwarfs
8.3.The Hα / FUV Ratio
8.4.Breaks in Radial Profiles in dIrr Galaxies

9.SUMMARY

REFERENCES