ARC Centre of Excellence for All Sky Astrophysics in Three Dimensions (ASTRO-3D)

ASTRO 3D logo

The ARC Centre of Excellence in All Sky Astrophysics in 3 Dimensions (ASTRO 3D) unifies over 200 world-leading astronomers to understand the evolution of the matter, light, and elements from the Big Bang to the present day.

Visit the website: astro3d.org.au

Galaxies pump out contaminated exhausts

Corrected 31 August: ‘500 light years’ updated to ‘500 million light years’

Research reveals how star-making pollutes the cosmos

Animation available, astronomers available in Australia and UK for interview

Galaxies pollute the environment they exist in, researchers have found.

A team of astronomers led by Alex Cameron and Deanne Fisher from the ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) used a new imaging system on at the WM Keck Observatory in Hawaii to confirm that what flows into a galaxy is a lot cleaner than what flows out.

The research is published today in The Astrophysical Journal.

[continue reading…]

Milky Way not unusual, astronomers find

Detailed cross-section of another galaxy reveals surprising similarities to our home

The first detailed cross-section of a galaxy broadly similar to the Milky Way, published today, reveals that our galaxy evolved gradually, instead of being the result of a violent mash-up. The finding throws the origin story of our home into doubt.

The galaxy, dubbed UGC 10738, turns out to have distinct ‘thick’ and ‘thin’ discs similar to those of the Milky Way. This suggests, contrary to previous theories, that such structures are not the result of a rare long-ago collision with a smaller galaxy. They appear to be the product of more peaceful change.

And that is a game-changer. It means that our spiral galaxy home isn’t the product of a freak accident. Instead, it is typical.

[continue reading…]

Free telescopes for Launceston, Exeter and Ulverstone schools, April 29 and 30

Sky-gazers visit the region to get kids dancing with the STARS

Astronomers, students and telescopes available for photographs. Key dates and locations:

April 29, morning: Riverside High School, 354 West Tamar Road, Launceston; Jay Duggan: 03 6327 6333
April 29, afternoon: Exeter High School, 28 Glen Ard Mohr Road, Exeter; Greg Finnigan: 03 6394 4366

April 30, morning and afternoon: Ulverstone Secondary College, 38 Leven St, Ulverstone; Kylie Waters: 03 6425 1433; 0400 126 282

Three schools in Launceston, Exeter and Ulverstone will be visited by astronomers, who will present them with powerful telescopes and show eager students how to use them to unlock the secrets of the stars.

Dr Brad Tucker, from the Centre of Excellence for All-Sky Astrophysics in 3D (ASTRO 3D) and the Australian National University, together with Mr Peter Swanton, also from ANU, will give the telescopes to Riverside, Exeter and Ulverstone high schools on April 29 and 30.

[continue reading…]

More than 60 years to achieve gender equity?

Modelling shows urgent need to revamp hiring and working conditions for astronomers

It will take until at least 2080 before women make up just one-third of Australia’s professional astronomers, an analysis published today in the journal Nature Astronomy reveals.

“Astronomers have been leaders in gender equity initiatives, but our programs are not working fast enough,” says Professor Lisa Kewley, director of the ARC Centre of Excellence for All-Sky Astrophysics in 3 Dimensions (ASTRO 3D).

Professor Lisa Kewley.
Credit: ASTRO 3D

Kewley is also an ARC Laureate Fellow at the Australian National University’s Research School for Astronomy and Astrophysics. She developed workforce forward modelling that can predict the fraction of women at all levels in astronomy from 2021 to 2060, given different initiatives in hiring or retention. The models show that Australia’s university leadership need to adopt 50:50 or affirmative action hiring and introduce exit surveys and retention initiatives.

“With these initiatives we can reach one-third women in 11 years, growing to 50 per cent in 25,” she said.

[continue reading…]

At cosmic noon, puffy galaxies make stars for longer

Galaxies with extended disks maintain productivity, research reveals

Massive galaxies with extra-large extended “puffy” disks produced stars for longer than their more compact cousins, new modelling reveals.

In a paper published in the Astrophysical Journal, researchers led by Dr Anshu Gupta and Associate Professor Kim-Vy Tran from Australia’s ARC Centre of Excellence in All Sky Astrophysics in 3 Dimensions (ASTRO 3D), show that the sheer size of a galaxy influences when it stops making new stars. 

[continue reading…]

The secrets of 3000 galaxies laid bare

Completion of Australian-led astronomy project sheds light on the evolution of the Universe

The complex mechanics determining how galaxies spin, grow, cluster and die have been revealed following the release of all the data gathered during a massive seven-year Australian-led astronomy research project.

The scientists observed 13 galaxies at a time, building to a total of 3068, using a custom-built instrument called the Sydney-AAO Multi-Object Integral-Field Spectrograph (SAMI), connected to the 4-metre Anglo-Australian Telescope (AAT) at Siding Spring Observatory in New South Wales. The telescope is operated by the Australian National University.

[continue reading…]

Free telescopes set school kids dancing with the STARS

Astronomers head to the country to spark student interest in what lies above.

ANU astronomer Brad Tucker showing students from Rockhampton High School how to use their powerful new telescope. Credit: ANU Media

Children in remote and regional schools will soon be visited by astronomers bearing gifts in a quest to kindle interest in the cosmos.

The scientists – drawn from the ranks of the ARC Centre of Excellence for All Sky Astrophysics in 3D (ASTRO 3D) and the Australian National University – will donate a powerful telescope and high-tech accessories to each school so classes can continue to explore the Universe long after the astronomers have left.

[continue reading…]

Orbits of ancient stars prompt rethink on Milky Way evolution

Australian telescopes and European satellite combine to reveal unexpected motions among the Galaxy’s rarest objects

Theories on how the Milky Way formed are set to be rewritten following discoveries about the behaviour of some of its oldest stars.

An investigation into the orbits of the Galaxy’s metal-poor stars – assumed to be among the most ancient in existence – has found that some of them travel in previously unpredicted patterns.

[continue reading…]