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- W3101635765 abstract "We present our analysis of UV attenuation by internal dust of a large sample (N = 906 galaxies) of Lyman break galaxies (LBGs). Using spectral energy distributions (SEDs) from the PÉGASE galaxy spectral evolution model, we apply dust attenuation corrections to the G- colors, using the Witt & Gordon models for radiative transfer in dusty galactic environments to arrive at the UV attenuation factors. We show that the dust in the LBGs exhibits SMC-like rather than Milky Way-like characteristics and that the dust geometry in these systems is most likely to be represented by a clumpy shell configuration. We show that the attenuation factor exhibits a pronounced dependence on the luminosity of the LBG, a1600 ∝ (L/L☉)α, where 0.5 ≤ α ≤ 1.5. The exponent α depends on the initial parameters of the stellar population chosen to model the galaxies and the dust properties. We find that the luminosity-weighted average attenuation factor is likely to be in the range from 5.7 to 18.5, which is consistent with the upper limits to the star formation rate at 2 < z < 4 set by the far-infrared background. This implies that the current UV/optical surveys do detect the bulk of the star formation during the epoch 2 < z < 4 but require substantial correction for internal dust attenuation." @default.
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- W3101635765 date "2003-04-20" @default.
- W3101635765 modified "2023-10-16" @default.
- W3101635765 title "The Dust in Lyman Break Galaxies" @default.
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- W3101635765 doi "https://doi.org/10.1086/368344" @default.
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