Using
the European Southern Observatory's (ESO) Atacama Large
Millimeter/submillimeter Array (ALMA), astronomers have discovered gas
reservoirs around multiple distant galaxies that fuel the creation of
stars. The discovery of the molecule CH+ has led scientists to challenge
the theory of how winds affect the creation of new stars.
During
the violent births and deaths of stars, winds occur within galaxies
which can eject gas from the galaxies. For a long time, scientists have
agreed that these winds play an important a role in pushing gas beyond a
galaxy's gravitational grasp.
However, the discovery of CH+,
also known as methylidynium - which acts as a tracer (imagine a drop ink
in a current of water) - has allowed scientists to see previously
unseen reservoirs of cold gas. These new reservoirs show the winds are
actually doing the opposite.
“By driving turbulence in the
reservoirs, these galactic winds extend the starburst phase instead of
quenching it," said Edith Falgarone at the Paris Observatory.
Read more about this fascinating story at: https://www.newscientist.com/article/2145887-hidden-pockets-of-turbulent-gas-fuel-stars-in-far-off-galaxies/
Image: Winds and their effects in the creation of new stars via ESO
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Thursday, August 31, 2017
NEWLY DISCOVERED MOLECULE CHALLENGES IDEA OF HOW SOME GALAXIES FORM
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