Uncovering the Fossil Record of Galaxy Formation. Our Australian-led team recently used the Anglo-Australian Telescope to discover large numbers of a new type of very small galaxy in the centres of two galaxy clusters. This project will allow us to maintain Australian leadership in this new area of astrophysics research, whilst using leading international facilities.
Galactic Cannibalism: The link between dwarf galaxies and globular star clusters. The formation of bright globular star clusters in giant galaxies like our own Milky Way remains an unsolved problem in astrophysics. Galactic cannibalism is the theory that they formed by the disruption of dwarf galaxies that came too close to the gravitational field of giant galaxies. We will use the new Gemini Telescopes to test this theory with sensitive comparisons of the properties of globular clusters, dwarf ....Galactic Cannibalism: The link between dwarf galaxies and globular star clusters. The formation of bright globular star clusters in giant galaxies like our own Milky Way remains an unsolved problem in astrophysics. Galactic cannibalism is the theory that they formed by the disruption of dwarf galaxies that came too close to the gravitational field of giant galaxies. We will use the new Gemini Telescopes to test this theory with sensitive comparisons of the properties of globular clusters, dwarf galaxies and our newly-discovered ultra-compact dwarf galaxies which may be the missing link in this process.Read moreRead less
Exploring the smallest exoplanets in the southern hemisphere with Veloce. This project aims to determine how common rocky terrestrial planets are amongst the stars near our Sun, and to discover potentially habitable planets which will be prime targets for space-based searches for biological signatures for decades to come. It will engage with NASA's next-generation planet discovery mission (TESS) which launches in 2017, and use Australian investments in astronomical infrastructure (the Veloce fac ....Exploring the smallest exoplanets in the southern hemisphere with Veloce. This project aims to determine how common rocky terrestrial planets are amongst the stars near our Sun, and to discover potentially habitable planets which will be prime targets for space-based searches for biological signatures for decades to come. It will engage with NASA's next-generation planet discovery mission (TESS) which launches in 2017, and use Australian investments in astronomical infrastructure (the Veloce facility) to measure the masses and densities of planets that TESS discovers. The project will answer fundamental and existential questions for humanity – "Is our Earth a uniquely habitable environment in the Universe? Are we alone?"Read moreRead less
How typical is our Local Galaxy Group? This project will uncover how unusual the Local Group is by comparing the Milky Way and Andromeda Galaxy (known as M31) halos to similar mass systems in the local Universe. By using well understood galaxy groups created as part of the Galaxy And Mass Assembly project (GAMA), the study will be able to uncover the mass distribution of galaxies found in different mass groups. It will go further than any previous work by combining these robust groups with faint ....How typical is our Local Galaxy Group? This project will uncover how unusual the Local Group is by comparing the Milky Way and Andromeda Galaxy (known as M31) halos to similar mass systems in the local Universe. By using well understood galaxy groups created as part of the Galaxy And Mass Assembly project (GAMA), the study will be able to uncover the mass distribution of galaxies found in different mass groups. It will go further than any previous work by combining these robust groups with fainter imaging data. The combination of both datasets will allow the determination of whether the Local Group is typical or unusual. Putting the Local Group into a cosmological context is vital since many future Galactic archaeology surveys assume that it is typical, and can meaningfully inform us about the wider universe.Read moreRead less
Weighing Black Holes with The Australian Dark Energy Survey. This project plans to measure how supermassive black holes have evolved over the last 12 billion years. Direct measurements of central black hole masses only exist for about 40 relatively nearby galaxies. The unique time-lapse observations and five-year baseline of the Australian Dark Energy Survey will enable us to measure masses for about 400 black holes, an order of magnitude more than previously possible. In addition to weighing bl ....Weighing Black Holes with The Australian Dark Energy Survey. This project plans to measure how supermassive black holes have evolved over the last 12 billion years. Direct measurements of central black hole masses only exist for about 40 relatively nearby galaxies. The unique time-lapse observations and five-year baseline of the Australian Dark Energy Survey will enable us to measure masses for about 400 black holes, an order of magnitude more than previously possible. In addition to weighing black holes, recent results show that with precision measurement these systems may provide a standard candle, a new fundamental yardstick for cosmology. Unlike supernova observations that discovered dark energy, our measurements are practical to distances stretching back across 90 per cent of the observable universe.Read moreRead less
The major transformation mechanism of disk galaxies. This project aims to discover how lenticular (S0) galaxies formed, which has been a problem since they were first introduced as a possible transition between elliptical and spiral galaxies over 80 years ago. This project will compare observations at various wavelengths and high-resolution computer simulations. It also aims to advance physical understanding of star formation, gas and dust evolution, and morphological transformation driven by en ....The major transformation mechanism of disk galaxies. This project aims to discover how lenticular (S0) galaxies formed, which has been a problem since they were first introduced as a possible transition between elliptical and spiral galaxies over 80 years ago. This project will compare observations at various wavelengths and high-resolution computer simulations. It also aims to advance physical understanding of star formation, gas and dust evolution, and morphological transformation driven by environments. The expected benefit is to solve the problem of S0 formation and provide models to interpret the large volumes of data generated by Australian surveys.Read moreRead less
Light from darkness: understanding extrasolar planets from their shadows. This project aims to determine the detailed properties of "sub-Saturn" planets. Theories of planet formation are heavily biased toward explaining our Solar System, which is not representative of the general population of planetary systems in our Galaxy. The vast majority of other planetary systems feature “warm sub-Saturns”: planets of ~10-100 Earth masses orbiting close to their host star. Due to a shortage of well-charac ....Light from darkness: understanding extrasolar planets from their shadows. This project aims to determine the detailed properties of "sub-Saturn" planets. Theories of planet formation are heavily biased toward explaining our Solar System, which is not representative of the general population of planetary systems in our Galaxy. The vast majority of other planetary systems feature “warm sub-Saturns”: planets of ~10-100 Earth masses orbiting close to their host star. Due to a shortage of well-characterised sub-Saturns, little is known about their composition and detailed properties. This project aims to advance our understanding of planet formation via intensive, dedicated ground-based characterisation of these new planets.Read moreRead less
Dark matter in the smallest galaxies. The gravity from invisible dark matter controls the formation of large objects like galaxies in the Universe, but we don't know how smaller objects form. This project will make an advanced computer simulation of the formation of the smallest galaxies and compare it with new observations of these objects to determine how they form.
From dust to planets: New initiatives to refine models of the inner Solar System's earliest history. This project will help continue the proud tradition of Australia as an international leader in mass spectrometric analyses and cosmochemistry. The questions surrounding the origin and significance of terrestrial planets are closely related to our very presence: "Are we alone"?
Research into meteorites is one of the few areas of science that truly captures the imagination of the general public. T ....From dust to planets: New initiatives to refine models of the inner Solar System's earliest history. This project will help continue the proud tradition of Australia as an international leader in mass spectrometric analyses and cosmochemistry. The questions surrounding the origin and significance of terrestrial planets are closely related to our very presence: "Are we alone"?
Research into meteorites is one of the few areas of science that truly captures the imagination of the general public. This project, through its integration with the WA Museum, gives the public a possibility to share in this experience.Read moreRead less
Minimizing hypersonic skin-friction by boundary-layer combustion. The high drag associated with hypersonic flight has been a major obstacle to development of hypersonic aircraft. It is generally accepted that half the drag of hypersonic vehicles will be caused by air friction on the aircraft's skin, due mainly to the turbulent boundary layer which forms on the skin. However, a new method of reducing skin friction, by injecting and burning fuel in the boundary layer, has been discovered. This ....Minimizing hypersonic skin-friction by boundary-layer combustion. The high drag associated with hypersonic flight has been a major obstacle to development of hypersonic aircraft. It is generally accepted that half the drag of hypersonic vehicles will be caused by air friction on the aircraft's skin, due mainly to the turbulent boundary layer which forms on the skin. However, a new method of reducing skin friction, by injecting and burning fuel in the boundary layer, has been discovered. This project is aimed at investigating the range of conditions under which this method will be effective. By this boundary-layer "lubrication" much more efficient hypersonic flight will be possible.Read moreRead less