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We present a new analysis of the dust obscuration in starburst galaxies atlow and high redshift. This study is motivated by our unique sample of the mostextreme UV-selected starburst galaxies in the nearby universe (z<0.3), found tobe good analogs of high-redshift Lyman Break Galaxies (LBGs) in most of theirphysical properties. We find that the dust properties of the Lyman BreakAnalogs (LBAs) are consistent with the relation derived previously by Meurer etal. (M99) that is commonly used to dust-correct star formation ratemeasurements at a very wide range of redshifts. We directly compare our resultswith high redshift samples (LBGs, BzK, and sub-mm galaxies at z=2-3) having IRdata either from Spitzer or Herschel. The attenuation in typical LBGs at z=2-3and LBAs is very similar. Because LBAs are much better analogs to LBGs comparedto previous local star-forming samples, including M99, the practice ofdust-correcting the SFRs of high redshift galaxies based on the localcalibration is now placed on a much more solid ground. We illustrate theimportance of this result by showing how the locally calibrated relationbetween UV measurements and extinction is used to estimate the integrated,dust-corrected star formation rate density at z=2-6.

Dust Attenuation in UV-selected Starbursts at High Redshift and their Local Counterparts: Implications for the Cosmic Star Formation Rate Density