Ancient stars: the origin of elements. The story of the origin of the elements fascinates mankind and touches many branches of science. This project combines new stellar population models of the oldest stars with new data from the Australian million-star GALactic Archaeology with HERMES (GALAH) survey to address basic astrophysical problems: mixing in stars, mass transfer in binary stars and measurement of the masses of the first stars. Knowing how these ancient stars behave is crucial to unders ....Ancient stars: the origin of elements. The story of the origin of the elements fascinates mankind and touches many branches of science. This project combines new stellar population models of the oldest stars with new data from the Australian million-star GALactic Archaeology with HERMES (GALAH) survey to address basic astrophysical problems: mixing in stars, mass transfer in binary stars and measurement of the masses of the first stars. Knowing how these ancient stars behave is crucial to understanding element production in the early Universe, both in our Milky Way and distant galaxies. By statistically comparing new models to the GALAH data, this project aims to measure the masses of the oldest galactic stars directly impacting branches of astrophysics from planets to galaxies.Read moreRead less
Imaging circumstellar matter at high resolution. Within contemporary astrophysics there is a particular fascination with matter in near-stellar environments. Studies of stellar and planetary systems from formation through to eventual destruction entail observation of material, principally dust and gas, playing their parts on a very remote stage. A new generation of telescopes, known as interferometers, deliver extremely high resolutions enabling our first direct glimpses of these phenomena. Here ....Imaging circumstellar matter at high resolution. Within contemporary astrophysics there is a particular fascination with matter in near-stellar environments. Studies of stellar and planetary systems from formation through to eventual destruction entail observation of material, principally dust and gas, playing their parts on a very remote stage. A new generation of telescopes, known as interferometers, deliver extremely high resolutions enabling our first direct glimpses of these phenomena. Here I propose using a number of these devices in concert in order to dramatically enhance their scientific payoff. In addition to enabling unique studies of stellar systems, new techniques for merging disparate data into powerful combined forms will be devised.Read moreRead less