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Article Contents

ABSTRACT

1.INTRODUCTION

2.WHAT IS A FIRST GALAXY?

2.1.Theoretical Perspective

2.2.Observational Perspective

3.CONSTRAINTS FROM EXISTING OBSERVATIONS

3.1.High-redshift Dropout galaxies

3.2.Lyman- Emitters

4.THEORETICAL STUDIES

4.1.Overview

4.2.Pre-Galactic Metal Enrichment

4.3.Star Formation in the First Galaxies

4.4.Radiation from the First Galaxies

5.THE FIRST SUPERMASSIVE BLACK HOLES

5.1.Formation Models

5.2.SMBH-First Galaxy Coevolution

6.James Webb Space Telescope SIGNATURE

6.1.JWST Instruments and Sensitivities

6.2.Observing High-redshift Sources

6.3.Modelling Star Formation in the First Galaxies

6.4.Source Number Counts

7.STELLAR ARCHAEOLOGY

7.1.Ultrafaint Dwarf Galaxies

7.2.Theoretical Models

8.OUTLOOK

REFERENCES