(201201) — CANBERRA, Dec. 1, 2020 (Xinhua) — File photo provided by Australia’s Commonwealth Scientific and Industrial Research Organisation (CSIRO) on Dec. 1, 2020 shows the Australian Square Kilometre Array Pathfinder (ASKAP) telescope in Australia.
Australian scientists have created a map of about 3 million galaxies in record speed using a radio telescope.
The CSIRO revealed on Tuesday that using the ASKAP telescope, researchers were able to map the entire southern sky in 300 hours, creating a new atlas of the universe. (CSIRO/Handout via Xinhua)
(Image from the Commonwealth Scientific and Industrial Research Organization: The Ascap Radio Telescope (ASKAP) in Australia, Dec. 1, 2020)
SYDNEY, April 9 (Xinhua) — A project led by Australia’s ASTRO 3D research center. It states that the age of a galaxy is one of the most important drivers of the orbits of stars within a galaxy. And the arrangement of stars becomes more chaotic as the age of the galaxy increases.
The study was recently published in the Monthly Journal of the Royal Astronomical Society. It said an international group of researchers analyzed observations using the SAMI Galaxy Survey, covering more than 3,000 galaxies in a variety of environments. And it was found that the age or specific star formation rate (SSFR) is the main variable related to the rotation.
On Monday (April 8), Jesse van de Sande, astronomer from the University of New South Wales Said: We know that age is affected by the environment. Because if the galaxy is in a very dense environment It will likely end star formation. Galaxies in denser environments are therefore older on average.
The report notes that a key point of this analysis is that the galaxy is not in such a dense environment that it would cause its rotation to decrease. But the truth is, they get old. Young galaxies often have stars rotating in an orderly fashion. But stellar movements are more chaotic in older galaxies.
Although most previous studies indicate that environment or mass play a more important role, But Estro 3D’s new study is useful in improving people’s understanding of the chaos within galaxy structure.
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