Researchers have observed the circumgalactic medium of a star-bursting galaxy 270 million light years away, revealing its vastness and influence on gas formation. The study provides new insights into galaxy evolution, how galaxies acquire gas, and where it goes.
An international team of astronomers has disproven a 'conspiracy' that stars and dark matter interact in inexplicable ways. By using advanced modeling techniques, they found that the similarity in galaxy density is due to how astronomers measured and modeled galaxies, rather than an actual interaction between stars and dark matter.
A recent study has found that the age of a galaxy is the primary driver of the random motion of its stars. By analyzing data from the SAMI Galaxy Survey, researchers discovered that older galaxies tend to have more chaotic star motions, regardless of their environment or mass.
Researchers discovered that twin stars differ in composition due to one star devouring planets or planetary material. The study used high-precision analysis and found the phenomenon in about eight percent of 91 pairs of twin stars, shedding light on planet evolution theorists.
Astronomers have made unprecedentedly detailed observations of an early galaxy merger using the James Webb Space Telescope (JWST). The findings suggest that stars developed much faster and more efficiently than expected, contradicting current models of galaxy formation.
A national Australian astronomy centre achieved gender parity in just five years by implementing evidence-based strategies and creating a supportive culture. The Centre's program reached a tipping point when there were 40% women in leadership positions, resulting in accelerated student enrolments by women.
Researchers found almost 90% of early universe galaxies had glowing gas, triggering intense star formation. The James Webb Space Telescope provided unprecedented clarity to study these infant galaxies, revealing their role in shaping the Universe.
Researchers create precise temperature map of a distant galaxy, separating heat sources from a supermassive black hole and newly-formed stars. This discovery provides new insights into the growth rate of galaxies in the early Universe.
Researchers studying ancient quasars have discovered a rapid increase in warm carbon around 13 billion years ago, potentially linked to the 'Epoch of Reionisation' and large-scale heating of gas. This finding provides new insights into the evolution of the universe's chemical composition.
The study finds that galaxies with bigger bulges tend to spin perpendicular to filaments, while smaller-bulged galaxies spin parallel. Galaxy mergers cause spin flips as galaxies move along filaments.
Scientists have confirmed 68 strong gravitational lenses, transforming our understanding of galaxy evolution and dark matter. The discovery uses machine learning algorithms to identify thousands of potential lenses, opening a new window into studying mass distribution in distant galaxies.
Researchers analyzed individual stars to identify components of the Milky Way, finding that it consumed smaller galaxies. The study used advanced spectrographic techniques to measure elemental abundances, providing early insights into the galaxy's formation and evolution.
The ARC Centre of Excellence for All Sky Astrophysics in 3D has discovered that the youngest generation of stars will eventually stop contributing metals back to the universe. This change affects the composition of the galaxy over time, with around half of the carbon and all elements heavier than iron synthesized by stars like our Sun.
Researchers have reduced background noise using new antennas in the Australian hinterland, allowing them to refine their search for a 13-billion-year-old signal known as the Epoch of Reionisation. By surveying over 80,000 radio signal sources, they produced models that significantly improved efforts to locate the elusive signal.
Researchers have confirmed that galaxies emit a significant amount of polluted gas into space, contrary to previous assumptions. This 'outflow' is driven by the process of star formation and can include elements such as oxygen, carbon, and iron.
Researchers have found evidence of a 'magneto-rotational hypernova', a previously unknown type of cataclysm that could explain the presence of high amounts of uranium and zinc in ancient stars. The discovery, published in Nature, reveals a new pathway for the formation of heavy elements in the infant universe.
The discovery of UGC 10738 reveals that galaxies with similar structures and properties are likely common. The galaxy's thick disc consists mainly of ancient stars, while its thin disc stars are more recent and contain more metal.
The astronomy industry has a long way to go before achieving gender parity, with women making up less than one-third of professional astronomers by 2080. Implementing 50:50 hiring ratios and retention initiatives, such as exit surveys and work-life balance improvements, can help reach the goal of 30% female representation in a decade.
Research reveals that galaxies with larger, 'puffy' disks continue to form stars over a longer period after cosmic noon. This is due to the cooler gas and lower influence of black holes, allowing for continued star formation. By studying galaxy disk size, astronomers can now accurately predict when star formation will cease.
The SAMI survey has revealed the internal structures of galaxies, showing how they interact and grow over time. The study provides insights into the forces that shape galaxy evolution, including the role of supermassive black holes.
A study of ancient star orbits reveals unexpected patterns, contradicting previous assumptions about the Galaxy's metal-poor stars. The research, conducted by a team of astronomers, found that some of these stars orbit in previously unpredicted paths, similar to the Sun's path within the disk.
A new analysis of galaxy evolution finds that neutron star collisions do not create the quantity of chemical elements previously assumed. Instead, an entirely different sort of stellar phenomenon - unusual supernovae with strong magnetic fields - is responsible for making most of the heavy elements, including gold.
Astronomers have captured an image of a super-rare type of galaxy with a 'ring of fire' structure, existing 11 billion years ago. This discovery is expected to shake up theories about the earliest formation of galactic structures and how they evolve.
A study published in the Astrophysical Journal reveals that massive galaxies attain their size by merging with smaller ones. Researchers used a combination of observation and modelling to analyze how gases within galaxies move, finding evidence that many stars have been acquired from outside.
A new review analysis published in Nature Astronomy finds that increasing diversity among astronomers can lead to significant research discoveries and improved innovation. The study highlights progress in gender equity, with initiatives such as the Pleiades Awards leading to a culture change in Australian astronomy.
A team of scientists used data from NASA's Kepler telescope to calculate that the thick disc of the Milky Way is about 10 billion years old. This finding resolves a long-standing question about the age distribution of stars in the disc.
Researchers analyzed 1418 galaxies and found small ones spin differently than large ones. The alignment changes as galaxies collide and merge with others, gaining mass. The study offers insight into the deep structure of the universe and how galaxies form.
A massive explosion occurred in the center of the Milky Way 3.5 million years ago, creating two enormous 'ionisation cones' that sliced through the galaxy and impacted the Magellanic Stream. The blast was so powerful it lasted for 300,000 years and was triggered by nuclear activity associated with the black hole.
Researchers have detected a 10-fold improvement in data gathered by the Murchison Widefield Array, bringing them closer to understanding the life and death of the earliest stars. The signal is more than 12 billion years old and was refined using new techniques to exclude sources of contamination.
A newly discovered ancient star contains a record-low amount of iron, hinting at the nature of the first stars in the Universe. The ultra-metal-poor red giant star has iron levels 1.5 million times lower than that of the Sun.