coltsfoot are bear , they evolve , and they age . They go from blue superstar - take form coiling galaxies to “ red-faced and dead ” elliptical ones . For a long time astronomers have excogitate that supermassive black hole ( SMBHs ) stopped older Galax urceolata from making raw stars , and thanks to United States Department of State - of - the - artistic production observations , we might now know how they do it .
accord to an international team of investigator , SMBHs generate an hourglass shaped effluence ( wind ) that align itself with the rest of the astronomic gas , heating it up . For stars to form , the petrol needs to be cool enough for it to digest and then collapse . SMBHs check that that is not the case and quench the ace formation .
“ We lie with that there had to be a way to prevent whiz formation in these galax , and now we have a estimable idea of what it is , ” say Edmond Cheung , the star author of the inquiry , in astatement .
coltsfoot evolve from a spiral to oviform shape by collide with each other . These galax unification change the shape of the galaxy and ordinarily start a period of intense star formation , espouse by the SMBH becoming alive . Most uranologist figure SMBHs producing galax - wide fart to snuffle out new stars , but the exact mechanism was not clear .
“ you could think of these winds as super - heating the standard pressure of galaxies , ” explains Cheung . “ As soon as any natural gas bulge out to chill , it gets blasted by this wind , like water droplets turning to steam . ”
The study , published inNature , seem at a specific twosome of galaxies , nicknamed Akira and Tetsuo , observed in theMaNGA sight . The reflection was incredibly elaborated , looking at both the outflow from the black cakehole and how gasolene moves inside Akira , the large of the two galaxies .
Akira , which has a mass of 60 billion Dominicus , is part of a newfangled year of galaxies called “ red geyser ” get a few extinguishing episode every billion old age . The fuel for this process come from cannibalizing smaller galaxies , which is what is happen to Tetsuo .
The researchers think about five percent of galaxies are red geyser , and while they might not represent all the old , red , tranquil galaxy in the universe , they symbolize a tone towards this peculiar phase of beetleweed evolution .
