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26 April 2024 |
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The Starburst Intensity Limit And Its Ultraviolet Implications | | Gerhardt R. Meurer
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18 Jun 1997 | | Subject: | astro-ph | | Abstract: | Our recent work on starbursts, particularly in the ultraviolet (UV), is summarized. The intrinsic UV fluxes of UV selected starbursts can be derived from UV data alone because, to first order, their dust behaves like a foreground screen. This allows a comparison of the bolometric effective surface brightness S_e of UV selected starbursts to other starburst samples. Starbursts have a robust (90th percentile) upper limit S_e <~ 2.0e{11} L_{sun} kpc^{-2}, which strongly suggest that their global star formation intensities are regulated. The mechanism(s) involved in the regulation are not yet clear. The dust attenuation corrections for high-z starbursts are significant. Calculations of the rate of evolution in the early universe based on zero dust interpretations are probably underestimated by about an order of magnitude. Hence the early universe was not quiescent, but obscured. | | Source: | arXiv, astro-ph/9706179 | | Services: | Forum | Review | PDF | Favorites | |
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