Scientists find elusive gas from post-starburst galaxies hiding in plain sight”Scientists have discovered that post-starburst galaxies condense their gas rather than expelling it, begging the question: What’s actually keeping them from forming stars?”
”Scientists have discovered that post-starburst galaxies condense their gas rather than expelling it, begging the question: What’s actually keeping them from forming stars? Post-starburst galaxies were previously thought to scatter all of their gas and dustthe fuel required for creating new starsin violent bursts of energy, and with extraordinary speed. Now, new data from the Atacama Large Millimeter/submillimeter Array (ALMA) reveals that these galaxies don’t scatter all of their star-forming fuel after all. Instead, after their supposed end, these dormant galaxies hold onto and compress large amounts of highly-concentrated, turbulent gas. But contrary to expectation, they’re not using it to form stars.In most galaxies, scientists expect gas to be distributed in a way similar to starlight. But for post-starburst galaxies, or PSBs, this isn’t the case. PSBs are different from other galaxies because they are born in the aftermath of violent collisions, or mergers between galaxies. Galaxy mergers typically trigger massive bursts of star formation, but in PSBs, this outburst slows down and near-completely stops almost as soon as it begins. As a result, scientists previously believed that little or no star-forming fuel was left in these galaxies’ central star-forming factories. And until now, the belief was that the molecular gases had been redistributed to radii well beyond the galaxies, either through stellar processes or by the effects of black holes. The new results challenge this theory.”We’ve known for some time that large amounts of molecular gas remains in the vicinity of PSBs but haven’t been able to say where, which in turn, has prevented us from understanding why these galaxies stopped forming stars. Now, we have discovered a considerable amount of remaining gas within the galaxies and that remaining gas is very compact,” said Adam Smercina, an astronomer at the University of Washington and the principal investigator of the study. ”While this compact gas should be forming stars efficiently, it isn’t. In fact, it is less than 10-percent as efficient as similarly compact gas is expected to be.”
Laajenevat tähdet syntyvät laajenevasta pimeästä aineesta nopeasti ilman vetäviä voimia 😃
Galaksien keskusten laajenevat supermassiiviset kohteet syntyivät omissa 3 D alkuräjähdyksissään nopeasti ja valmiiksi ”kauaksi” toisistansa.
Laajenevat galaksit syntyivät sisältä / keskeltä ulos päin ilman minkäänlaisia vetäviä voimia!!!
Avaruudessa laajenevista supermassiivisista kohteista työntyy ulos laajenevaa pimeää ainetta josta syntyi ”nopeasti” paljon uusia laajenevia tähtiä kun kaksi avaruudessa laajenevaa supermassiivista kohdetta ohitti toisensa läheltä tai kenties jopa törmäsivät toisiinsa alkumatkastaan suht jyrkässä kulmassa.