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A sting in the AGRA tale
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Sisulu Foundation: Africa responds to COVID s hard lessons
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We used to think that all stellar nurseries across every galaxy must look more or less the same, but this survey has revealed that this is not the case, and stellar nurseries change from place to place, lead author Adam Leroy, associate professor of astronomy at The Ohio State University, said in a statement. These nurseries are responsible for building galaxies and making planets, and they re just an essential part in the story of how we got here.
This five-year survey was tackled using a small segment of the cosmos called the nearby universe, due to its convenient location near our Milky Way galaxy. Astronomers engaged in the study employed the Atacama Large Millimeter/Submillimeter Array (ALMA) radio telescope sitting in Chile s Atacama Desert for this new mapping endeavor.
Where a star is born
Fascinating new insights from the 238
th meeting of the American Astronomical Society.
Galaxies. Credit: ALMA (ESO/NAOJ/NRAO)/S. Dagnello (NRAO)
Stars like our Sun are born in stellar nurseries – cosmic clouds of dust and gas that churn out thousands of astral progeny in their lifetimes.
In two new papers due to be presented this week at the 238
th meeting of the American Astronomical Society, scientists have for the first time charted the stellar nurseries in the nearby Universe, challenging the prevailing notion that all clouds look and act the same.
For six years between 2013 and 2019, the international team of astronomers used the Atacama Large Millimeter/submillimetre Array (ALMA) in the Atacama desert of northern Chile to survey 100,000 stellar nurseries across 90 galaxies, with the aim of understanding how they connect to their parent galaxies. This was part of the PHANGS (Physics at High Angular Resolution in Nearby GalaxieS) project.
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