Expected properties of primeval galaxies and confrontation with existing observations

Abstract

We discuss the expected spectral properties of starbursts of zero and very low metallicity covering their restframe EUV and UV to optical spectra. The main criteria to establish such a "primeval" nature are summarised. Finally we compare these expected properties, including continuum and emission lines, to existing observations of high-z galaxies and briefly discuss future observational prospects.

4 pages, To appear in "Multi-wavelength cosmology", Ed. M. Plionis, Kluwer Acad. Press. Related publications and models available at http://webast.ast.obs-mip.fr/sfr/