Other
Scientific paper
May 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..408...63b&link_type=abstract
The ultraviolet universe at low and high redshift. AIP Conference Proceedings, Volume 408, pp. 63-72 (1997).
Other
3
Origin, Formation, Evolution, Age, And Star Formation, Physical Properties, Ultraviolet
Scientific paper
The far UV non-ionizing emission of star-forming galaxies shortward ~3000 Å is due to young and massive stars. Therefore integrated far UV photometry of such galaxies is a powerful tool to study their current star formation activity. The properties of the far UV emission are compared to those of other star formation tracers: the FIR, Hα line and radio continuum emissions. The link between these tracers and the gas content of galaxies is re-visited stressing the case of the molecular phase. The availability of photometric data integrated over the galaxies from the UV to the far-infrared allows to perform an energy budget: the extinction is constrained by comparing the observed emission of the stars (especially in UV) to the re-radiation in the far-infrared of the heated dust. Such an energy budget leads to a rather low extinction. Furthermore, the UV non ionizing flux of galaxies is found to be the major contributor to the dust heating.
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