We present data from Integral Field Spectroscopy for 3 supercompact UV-Luminous Galaxies ( ScUVLGs ) .
As nearby ( z \sim 0.2 ) , compact ( R _ { 50 } \sim 1-2 kpc ) , bright Paschen- \alpha sources , with unusually high star formation rates ( SFR = 3 - 100 M _ { \odot } yr ^ { -1 } ) , ScUVLGs are an ideal population for studying detailed kinematics and dynamics in actively star-forming galaxies .
In addition , ScUVLGs appear to be excellent analogs to high redshift Lyman Break Galaxies ( LBGs ) and our results may offer additional insight into the dynamics of LBGs .
Previous work by our team has shown that the morphologies of these galaxies exhibit tidal features and companions , and in this study we find that the dynamics of ScUVLGs are dominated by disturbed kinematics of the emission line gas– suggestive that these galaxies have undergone recent feedback , interactions or mergers .
While 2 of the 3 galaxies do display rotation , v/ \sigma < 1 – suggesting dispersion dominated kinematics rather than smooth rotation .
We also simulate how these observations would appear at z \sim 2 .
Lower resolution and loss of low surface brightness features causes some apparent discrepancies between the low- z ( observed ) and high- z ( simulated ) interpretations and quantitatively gives different values for v/ \sigma , yet simulations of these low- z analogs manage to detect the brightest regions well and resemble actual high- z observations of LBGs .