Galaxer börjar “dö” när de inte längre kan bilda stjärnor, men det tillfälle när denna process inleds har astronomerna hittills aldrig lyckats se. Med hjälp av Atacama Large Millimeter/submillimeter Array (ALMA), där ESO är en partner, har astronomer nu observerat en avlägsen galax i färd med att kasta bort ungefär hälften av sin stjärnbildade gas. Detta sker med en häpnadsväckande hastighet, motsvarande 10 000 solmassor per år, vilket betyder att galaxen i mycket snabb takt förlorar byggmaterialet till nya stjärnor. Forskarlaget tror att denna spektakulära händelse orsakades av en kollision med en annan galax, vilket kan ge ny kunskap om processen.
Pressmeddelandet med bilder och filmer finns på:
https://www.eso.org/public/sweden/news/eso2101/
med vänliga hälsningar,
The ESO Department of Communication
11 januari 2021
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