Nearby analogs of Lyman break galaxies (LBGs)
I have been using integral field spectroscopy at near-infrared wavelengths to characterize kinematics, dust, ionization properties, and warm molecular hydrogen in a sample of compact, UV-bright, star-forming galaxies that strongly resemble high-redshift LBGs.
Image: H2/Paα emission line ratios (pink) and ionized gas (white contours) shown for J1434, a LBG analog system. The companion galaxy to the northwest is characterized by unusually intense H2 radiation from massive, newly formed stars, while the central galaxy is bright in Paα but not H2 emission. For more, be on the lookout for J. F. Wu et al., (2019, ApJ, submitted).