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Fast molecular outflow from a dusty star-forming galaxy in the early Universe

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Science  07 Sep 2018:
Vol. 361, Issue 6406, pp. 1016-1019
DOI: 10.1126/science.aap8900

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Molecular gas ejected from a distant galaxy

Galaxies grow by forming stars from cold molecular gas. The rate at which they do so is limited by various feedback processes (such as supernovae or stellar winds) that heat and/or eject gas from the host galaxy. Spilker et al. used submillimeter observations to discover an outflow of molecular gas from a galaxy in the early Universe, a period of vigorous star formation. Modeling the outflow revealed that the mass of gas being ejected is similar to that being turned into stars. The results will help determine how quickly galaxies formed after the Big Bang.

Science, this issue p. 1016

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