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Are Damped Ly-alpha Systems Large, Galactic Disks ?
classification
🌌 astro-ph
keywords
largedisksdlasgalacticdampedfoundly-alphasystems
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The hypothesis that the Damped Ly-alpha systems (DLAs) are large, galactic disks (Milky Way sized) is tested by confronting predictions of models of the formation and evolution of (large) disk galaxies with observations, in particular the Zinc abundance distribution with neutral hydrogen column density found for DLAs. A pronounced mismatch is found strongly hinting that the majority of DLAs may not be large, galactic disks.
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