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
“Beacons in the Night” unveiling how galaxies light up dark matter. How dark matter influences the formation and evolution of galaxies is to this day an outstanding question in astrophysics. To answer it, world-class facilities and a unique combination of observations and theory are required. This DP team, a world-class team of observers and theorists, will tackle this question by leveraging on two multi-million dollar projects: the MAGPI galaxy survey and the hydrodynamical simulations suite EA ....“Beacons in the Night” unveiling how galaxies light up dark matter. How dark matter influences the formation and evolution of galaxies is to this day an outstanding question in astrophysics. To answer it, world-class facilities and a unique combination of observations and theory are required. This DP team, a world-class team of observers and theorists, will tackle this question by leveraging on two multi-million dollar projects: the MAGPI galaxy survey and the hydrodynamical simulations suite EAGLE-XL. MAGPI will deliver exquisite kinematics for hundreds of galaxies in the middle ages of the Universe, providing a view to the effect of dark matter on galaxies at this critical time, while EAGLE-XL represents the technological frontier in simulations and provides the best interpretative framework for MAGPI.Read moreRead less
Continuous Reaction Networks that Model Chemical Evolution of RNA. This Project aims to develop experimental models for chemical evolution that may have happened on the early Earth and which were important to the emergence of life. This Project expects to uncover synthetic pathways for ribonucleotide production using a combination of ionizing radiation and dry-wet cycles. Expected outcomes include an increased understanding of the range of physical and chemical parameters that will allow for rib ....Continuous Reaction Networks that Model Chemical Evolution of RNA. This Project aims to develop experimental models for chemical evolution that may have happened on the early Earth and which were important to the emergence of life. This Project expects to uncover synthetic pathways for ribonucleotide production using a combination of ionizing radiation and dry-wet cycles. Expected outcomes include an increased understanding of the range of physical and chemical parameters that will allow for ribonucleotide production to occur under the proposed geochemical settings. The knowledge gained in this Project will benefit the understanding of the chemical evolution of complex chemical mixtures relevant to early Earth environments and provide new mechanisms for how ribonucleotides could have arisen abiotically.Read moreRead less
Building galaxies in our backyard: satellites and stellar streams in the Local Group. By finding and studying faint satellites and stellar streams in the Local Group, this project will address basic questions about the formation and evolution of galaxies like our Milky Way. The project will also probe the conditions of star formation in the early universe, and the properties of the dark matter which constitutes most of the mass in our universe.
The convective boundaries in stars. This project aims to locate the boundaries of convection, a problem in models of stars. It will calculate high-resolution three-dimensional simulations of stars and observe star clusters. The effect of this advance on stellar modelling could be profound since almost all stars contain convective regions. Many branches of astronomy rely on stellar models so the effect could extend far beyond the immediate field, ultimately expanding understanding of the Universe ....The convective boundaries in stars. This project aims to locate the boundaries of convection, a problem in models of stars. It will calculate high-resolution three-dimensional simulations of stars and observe star clusters. The effect of this advance on stellar modelling could be profound since almost all stars contain convective regions. Many branches of astronomy rely on stellar models so the effect could extend far beyond the immediate field, ultimately expanding understanding of the Universe. It could also be crucial in realising the scientific advances of the surveys which are gathering data for up to a billion stars.Read moreRead less
The worlds next door: terrestrial exoplanets with the TOLIMAN space mission. This project aims to to explore our nearest neighbour star system, Alpha Centauri, for the first time probing for exoplanets with physical characteristics that resemble those of Earth. The finding of any such world, with the potential to support a biosphere like our own and lying only 4 light-years away, would profoundly alter our view of our place in the universe. The primary outcome of this project will be the design, ....The worlds next door: terrestrial exoplanets with the TOLIMAN space mission. This project aims to to explore our nearest neighbour star system, Alpha Centauri, for the first time probing for exoplanets with physical characteristics that resemble those of Earth. The finding of any such world, with the potential to support a biosphere like our own and lying only 4 light-years away, would profoundly alter our view of our place in the universe. The primary outcome of this project will be the design, construction, launch and operation of a novel and innovative space telescope: the TOLIMAN mission. This profoundly benefits the Australian space and university sectors, partnering them with international agencies to deliver marquee science with global impact: the search for our first stepping stone to interstellar space.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE170101086
Funder
Australian Research Council
Funding Amount
$360,000.00
Summary
Pioneering measurements of hidden gas in our Milky Way Galaxy. This project aims to measure hidden gas in our Milky Way Galaxy. The dynamic transformation of diffuse gas to dense clouds and then to stars is a crucial component of how galaxies function. Recent work implies vast reservoirs of undetected gas intermediate between the diffuse and dense phases – a missing link connecting diffuse gas to star-forming clouds. This project aims to uncover that hidden gas, using radio spectral line observa ....Pioneering measurements of hidden gas in our Milky Way Galaxy. This project aims to measure hidden gas in our Milky Way Galaxy. The dynamic transformation of diffuse gas to dense clouds and then to stars is a crucial component of how galaxies function. Recent work implies vast reservoirs of undetected gas intermediate between the diffuse and dense phases – a missing link connecting diffuse gas to star-forming clouds. This project aims to uncover that hidden gas, using radio spectral line observations and theoretical models to understand its role as an intermediary on the road to star formation. These results are expected to change understanding of how galaxies form and evolve from the early universe to the present day.Read moreRead less
Dark gas and the formation of molecular clouds. Using frontline radio telescopes in Australia, Chile and Antarctica the project aims to understand how molecular clouds are formed in space, a part of the life cycle of our galaxy, and the role of hard-to-detect 'dark gas' in this process. Australia's Mopra telescope plays a central role in this international endeavour.
Unveiling the Galaxy: Dense Gas and Star Formation in the Milky Way. This project aims to address one of the most fundamental problems in astrophysics - understanding how high-mass stars form - by utilising a new, innovative, purpose-designed astronomical survey. This project will generate new knowledge about the star formation process by interfacing theoretical predictions with novel observations, aided by the most accurate distances yet derived. Expected outcomes include a comprehensive unders ....Unveiling the Galaxy: Dense Gas and Star Formation in the Milky Way. This project aims to address one of the most fundamental problems in astrophysics - understanding how high-mass stars form - by utilising a new, innovative, purpose-designed astronomical survey. This project will generate new knowledge about the star formation process by interfacing theoretical predictions with novel observations, aided by the most accurate distances yet derived. Expected outcomes include a comprehensive understanding of star formation, and an unparalleled map of the dense gas structure of our Galaxy. This should provide significant benefits, such as the crucial insight needed to interpret future sensitive, high-resolution surveys with next generation, globe-spanning telescopes in which Australia is a key partner.Read moreRead less
Galactic archaeology: a radial velocity experiment to unveil the history of the Milky Way. The goal of the international RAdial Velocity Experiment (RAVE) survey is to measure velocities and chemical properties of 500,000 stars, using the Schmidt telescope at Siding Spring Observatory; the survey was conceived by Australians and involves astronomers from 10 countries. This is the basic information that we need to understand how the Milky Way formed and evolved.