Wissenschaftler identifizieren eine Ursache für massereiche Galaxien, die jung starben
https://www.earth.com/news/scientists-identify-a-cause-for-massive-galaxies-that-died-young/
Wissenschaftler identifizieren eine Ursache für massereiche Galaxien, die jung starben
https://www.earth.com/news/scientists-identify-a-cause-for-massive-galaxies-that-died-young/
9 Kommentare
Drugs and partying I bet.
And what’s the cause?
*sigh* I’ll do it myself.
„To find out, the team ran a simulation that follows galaxies as they grow, then rewound the histories of the quiet giants to see what they looked like earlier.
The experts tracked these galaxies at a stage when the Universe was roughly three to four billion years old, then followed each one back along its own past.
The answer came through clearly. Somewhere between 86 and 96 percent of the dead galaxies the model identified had blazed as dusty star-forming galaxies first.
Running the simulation forward, the team found that the galaxies destined to die young all shared one violent event.
It was an early collision with another galaxy of similar size, far sooner than most dusty galaxies experienced anything comparable.
That crash did two things at once. It dumped a huge volume of gas into the galaxy’s center, igniting a furious burst of star formation and feeding the [supermassive black hole](https://www.earth.com/news/how-do-black-holes-become-supermassive/) lurking there.
The black hole ballooned. Cold gas – the fuel stars form from – got consumed fast. Then the black hole finished the job.
In the team’s model, energy pouring out of the active core heated the surrounding gas and kept it from cooling back down, so no fresh material could fall in to seed new stars.“
Freedom? The cause they died for is freedom?
Fame? Drugs? 27 club?
P.S. I’m not a bot but I’m doing it for karma farming
Is it drugs ? .. its always drugs 🙁
There is a program on Netflix that describes this. It’s an animation.
the timing detail is what makes this interesting. it wasn’t just mergers that killed these galaxies, it was early mergers. a collision that happens in the first billion years dumps gas into the center all at once, feeds the black hole fast, and the black hole’s energy output then heats everything around it so new stars can’t form. galaxies that merged later had time to burn through gas gradually and stayed active much longer. same event, completely different outcome depending on when it happened.
Something tells me they just weren’t that into U(niverse)
Wow an ad blocker improves the experience on these sites immeasurably