Astronomers
using the Atacama Large Millimeter/submillimeter Array (ALMA) in
northern Chile have created the sharpest and clearest map yet of a
distant starburst galaxy.
Dubbed an 'unstoppable monster', galaxy
COSMOS-AzTEC-1 contains star-forming regions not located within its
galactic centre. In this galaxy stars form around 1,000 times faster
than in our Milky Way. In comparison, starburst galaxies typically form
stars at a pace some 100 times faster than in our home galaxy.
"A real surprise is that this galaxy seen almost 13 billion years ago has
a massive, ordered gas disk that is in regular rotation instead of what
we had expected, which would have been some kind of a disordered train
wreck that most theoretical studies had predicted," said Min Yun, a team member at UMass Amherst.
"How these galaxies have been able to amass such a large quantity of gas
in the first place and then essentially turn the entire gas reserve into
stars in the blink of an eye, cosmologically speaking, was a completely
unknown question about which we could only speculate. We have the first
answers now."
Read more about this fascinating story at: http://earthsky.org/space/starburst-galaxy-cosmos-aztec-1-unstoppable-monster
Image: Artist concept of COSMOS-AzTEC-1 via
National Astronomical Observatory of Japan/ALMA
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Friday, August 31, 2018
Astronomers Map 'Unstoppable' Starburst Galaxy
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