Using world-leading facilities, we’re investigating the gas reservoirs around galaxies that form new stars.
UVES SQUAD: The UVES Spectral Quasar Absorption Database
UVES SQUAD is the largest set of high-resolution quasar spectra, built from the data archives of the UVES instrument on the 8-metre Very Large Telescope, and has contributed to a wide array of cosmology, quasar and circumgalactic/intergalactic medium studies so far.
Discovering remnants of the first stars
Within spectra of distant quasars from the world's best optical telescopes, we are discovering rare, almost pristine gas clouds that may have been enriched with the metallic debris from the explosions of the universe's first stars.
Linking the circumgalactic medium to galaxies
Our Multiphase Galaxy Halos Survey uses both observations and simulations to determine how the CGM influences and drives galaxy evolution.
The physics of gas flows around galaxies at cosmic noon
We are examining the circumgalactic medium at the universe’s epoch of peak star formation in order to address how the evolution of galaxies is influenced by gas flows.
The nature of damped Lyman alpha systems
Detecting damped Lyman alpha systems (DLAs) in sightlines to galaxies, as opposed to quasars done previously, is a new approach that will be used by 30m telescopes in the future able to determine the size, mass and kinematics of DLAs for the first time to understand their nature and to perform 3D neutral hydrogen tomography in the early universe.
Understanding galaxy evolution through HI observations
Using observations from next generation radio telescopes, this project aims to understand the fundamental physical processes affecting galaxy evolution in the local universe including angular momentum, gravitational interactions and hydrodynamical processes.
We’re using the faintest spectral features in galaxies to make fundamental constraints on how stars form and impact the galaxy and circumgalactic medium around them.
Our astronomers use world-leading facilities such as the Keck Observatory, the Hubble Space Telescope, the European Southern Observatory and the Australian Square Kilometre Array Pathfinder.
The MeerKAT Habitat of Galaxies Survey (MeerHoGS) aims to investigate the role of environment in the baryon cycle of galaxies by combining HI interferometric imaging from the MeerKAT SKA Pathfinder with multiwavelength tracers of stellar mass and star formation.
MeerKAT will enable unprecedented studies of intragroup HI and tidal debris, particularly in group environments.
Fast radio bursts with ASKAP
Co-led at Swinburne, the Commensal Real-time Fast Transient (CRAFT) survey detects and localises fast radio bursts with the ASKAP array to both determine what causes FRBs and use them as cosmological probes.
Ionisation and metals
We are investigating how Lyman-continuum photons escape from star-forming regions and into the intergalactic medium, and how metals escape galaxies, especially in the early universe.
For more information, contact Associate Professor Emma Ryan-Weber.
Fundamental constants in distant galaxies
Using quasars as powerful background beacons, we are searching for cosmological variations in the fundamental constants of nature by studying gas in the outskirts of distant galaxies with the world's best telescopes.
Weighing the universe with deuterium
This project aims to weigh the universe by comparing the amount of hydrogen and its main isotope, deuterium, in distant, almost pristine clouds of gas.
Lyman continuum galaxies - uncovering the sources of reionisation
This project uses the Hubble Space Telescope, Keck Telescope, and other deep imaging and spectroscopy to uncover the sources responsible for the Epoch of Reionisation (EoR) and understand their physics and mechanisms of ionising flux escape.