This is a talk held during the regular colloquium series (usually Tuesdays at 4pm).
Despite pervasive residual star formation, early-type galaxies are generally considered "red and dead", composed exclusively of old stars with no star formation.
High frequency (~10-100 GHz) radio emission from galaxies offers one of the best means to quantify current star formation activity. At these frequencies, emission is generally optically thin and dominated by free-free radiation, which is directly proportional to the ionizing photon rate of young
The Galaxy And Mass Assembly (GAMA) survey is currently a 144 square-degree multi-wavelength survey including optical spectra being collected at the Anglo-Australian Telescope (AAT).
Type Ia supernovae (SNe Ia) are the best cosmological yard sticks available. Measurements of nearby and distant SNe Ia led to the discovery of the accelerating universe and currently provide the best constraints on the nature of dark energy.
Chemical abundances in galaxies provide a fossil record of previous generations of star formation, modulated by galactic-scale gas flows. I will present the latest results from our investigation into the chemical evolution of galaxies, both locally, and at high redshift.
Observations of the structure and kinematics of different stellar populations in the Milky Way's disk provide a unique perspective on disk formation and evolution.