UV Emission and bust properties of high redshift galaxies |
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| Authors: | D Calzetti |
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| Institution: | (1) Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD, 21218, U.S.A. |
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| Abstract: | The number density of the high-redshift (z >2) galaxies discoveredover the last few years with the Lyman-break technique is only afactor of a few lower than the number density of galaxies in the LocalUniverse. Thus, understanding the properties and the nature of thesehigh-redshift systems is instrumental to our understanding of thecosmic evolution of galaxies and their stellar content. I brieflyreview the observed characteristics of the Lyman-break galaxies,relate these galaxies to their most likely low-redshift counterparts,and discuss the implications of dust obscuration on the globalproperties of the Lyman-break population. Finally, the observationalproperties of the high-redshift population are set in the framework ofa simple evolutionary model for the stellar, metal and dust content ofgalaxies, to derive the intrinsic star formation history of theUniverse. |
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