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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 PУ?GASE galaxy spectral
evolution model, we apply dust attenuation corrections to the G-R
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/Lsolar)ЮБ, where
0.5<=ЮБ<=1.5. The exponent ЮБ 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 [ADS] ADS Citation Query
Copyright © 2012
Karl D. Gordon
All Rights Reserved
# citations = 54
citations vs. year [year,citations]
[2003,2][2004,6][2005,6][2006,6][2007,7][2008,3][2009,7][2010,2][2011,3][2012,2][2013,5][2014,4][2015,1]