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High star formation rates as the origin of turbulence in early and modern disk galaxies

Green, Andrew W; Glazebrook, Karl; McGregor, Peter; Abraham, Roberto; Poole, Gregory B; Damjanov, Ivana; McCarthy, P J; Colless, Matthew; Sharp, Rob


Observations of star formation and kinematics in early galaxies at high spatial and spectral resolution have shown that two-thirds are massive rotating disk galaxies, with the remainder being less massive non-rotating objects. The line-of-sight-averaged velocity dispersions are typically five times higher than in today's disk galaxies. This suggests that gravitationally unstable, gas-rich disks in the early Universe are fuelled by cold, dense accreting gas flowing along cosmic filaments and...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Nature
DOI: 10.1038/nature09452


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