Over 2/3 of all star formation in the Universe occurs in gas-rich, super-high pressure clumpy galaxies in the epoch of redshift $z \sim 1-3$. However, because these galaxies are so distant we are limited in the information available to study the properties of star formation and gas in these systems. I will present results using a sample of extremely rare, nearby galaxies (called DYNAMO) that...
The discovery of compact, UV-bright, $z \sim 0.2$ starbursts that strongly resemble Lyman break galaxies (LBGs) gives us the opportunity to study galaxy formation and evolution in far greater detail than would be possible at high redshifts. I will present VLT/SINFONI integral field spectroscopy of a sample of six LBG analogs, showcasing their diverse multiphase gas and dust properties. Intense...
The Star Formation History of the Universe changes with time and has a clear maximum around redshift $z \sim 2$, but it is not clear what drives the decline after that peak. Recent studies suggest a possible link between the cosmic density of H$_2$ -- the most abundant molecule in the Universe -- and the Star Formation History (Decarli et al. 2016; Keating et al. 2016; Riechers et al. 2018)....
The wide field of view, fast survey speed and high resolution of the Australian Square Kilometre Array Pathfinder (ASKAP) will provide the ability to study neutral hydrogen (HI) in large numbers of galaxies. In particular, the Wide-field ASKAP L-band Legacy All-sky Blind surveY (WALLABY) will produce HI images for half a million galaxies in the local Universe ($z<0.1$). This will result in the...
The star-forming properties of galaxies that reside in dense cores of galaxy clusters are remarkably different from those in the field. Several observations confirm that quiescent early-type galaxies are more prevalent in cluster whereas star-forming spirals dominate in the field. The dominant mechanism responsible for this bimodal distribution of galaxies in different environments remains...
This talk will begin with an overview of $z \sim 0$ relations between galaxy properties/environments and HI masses as observed in the complete, volume-limited RESOLVE survey, which has adaptive 21cm sensitivity probing down to 5-10% of stellar mass. The observed relations reveal galaxy and group mass dependence as well as trends with star formation history, AGN activity, metallicity, and...
The understanding of the role of neutral hydrogen in galaxy evolution is limited by radio sensitivity to $z<0.4$ and by ultraviolet sensitivity to $z>1.6$. This corresponds to a gap in temporal coverage of 5 billion years, and occurs right at the peak of the cosmic star formation rate. Recent advances in "intensity mapping" have begun to address this "HI desert." Intensity mapping permits the...
