In "Toward a New Millenium in Galaxy Morphology" ed. D. Block, Astr. and Space Sci. library, Kluwer. (astro-ph/9909016)
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Abstract. The study of high-redshift objects is rapidly developing, allowing to build the star formation history of the Universe. Since most of the flux from starbursts comes out in the FIR region, the submm and mm are privileged domains for the exploration at high z. I review the recent work on galaxies at high redshift in this wavelength region, for the continuum as well as for the line detection (dust and molecular gas). Perspectives are discussed to detect early objects (maybe protogalaxies) with the future large millimeter instruments.

Key Words: molecules, dust, galaxies, millimeter

Table of Contents

INTRODUCTION

DETECTION OF MOLECULAR GAS AT HIGH REDSHIFT

Emission lines

Absorption lines

DETECTION OF DUST AT HIGH REDSHIFT

Submm continuum surveys

Extremely red objects, EROs

AGN or Starbursts

Star Formation Rate

PERSPECTIVES WITH FUTURE MM INSTRUMENTS

Predicted Line and Continuum Fluxes

Source Counts

CONCLUSION

REFERENCES