Sterrenstelsels beginnen te ‘sterven’ wanneer ze stoppen met het vormen van nieuwe sterren, maar tot nu toe was het begin van dit proces bij een ver sterrenstelsel nog nooit duidelijk gezien. Met behulp van de Atacama Large Millimeter/submillimeter Array (ALMA), waarin de Europese Zuidelijke Sterrenwacht (ESO) een partner is, hebben astronomen nu een sterrenstelsel waargenomen dat bijna de helft van zijn sterren-vormende gas heeft uitgestoten. De lozing van gas voltrekt zich verrassend snel: met het equivalent van 10.000 zonnen per jaar. Het onderzoeksteam denkt dat deze spectaculaire ontwikkeling in gang is gezet door een botsing met een ander sterrenstelsel. Mogelijk zullen astronomen hun ideeën over hoe de stervorming in sterrenstelsels tot stilstand komt moeten herzien.
Het persbericht, de afbeeldingen en de video's zijn te vinden op:
https://www.eso.org/public/netherlands/news/eso2101/
Met vriendelijke groet,
The ESO Department of Communication
11 januari 2021
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