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Lyman Break Analogs (LBAs), characterized by high far-UV luminosities andsurface brightnesses as detected by GALEX, are intensely star-forming galaxiesin the low-redshift universe ($z\sim 0.2$), with star formation rates reachingup to 50 times that of the Milky Way. These objects present metallicities,morphologies and other physical properties similar to higher redshift LymanBreak Galaxies (LBGs), motivating the detailed study of LBAs as locallaboratories of this high-redshift galaxy population. We present results fromour recent integral-field spectroscopy survey of LBAs with Keck/OSIRIS, whichshows that these galaxies have the same nebular gas kinematic properties ashigh-redshift LBGs. We argue that such kinematic studies alone are not anappropriate diagnostic to rule out merger events as the trigger for theobserved starburst. Comparison between the kinematic analysis and morphologicalindices from HST imaging illustrates the difficulties of properly identifying(minor or major) merger events, with no clear correlation between the resultsusing either of the two methods. Artificial redshifting of our data indicatesthat this problem becomes even worse at high redshift due to surface brightnessdimming and resolution loss. Whether mergers could generate the observedkinematic properties is strongly dependent on gas fractions in these galaxies.We present preliminary results of a CARMA survey for LBAs and discuss theimplications of the inferred molecular gas masses for formation models.

Lyman Break Analogs: Constraints on the Formation of Extreme Starbursts at Low and High Redshift