HST UV imaging of star-forming galaxies

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Starburst Galaxies And Infrared Excess Galaxies, Origin, Formation, Evolution, Age, And Star Formation, Ultraviolet

Scientific paper

Ultraviolet (UV) images of nearby star-forming galaxies obtained with the Faint Object Camera aboard the Hubble Space Telescope (HST) reveal that the starburst regions in these objects are composed of numerous bright, compact knots of hot stars superposed on a diffuse, extended background. I present several examples of HST UV images of these regions in various galaxies and discuss the properties of the starburst knots and the diffuse background, as well as the implications for the star-formation histories in these objects. I briefly compare the UV images of these starburst regions with images obtained at longer wavelengths. Finally, I use these UV images to construct simulated observations of starburst galaxies at high-redshift and compare the results with recent images of high-redshift objects.

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