Initial Chemical Enrichment in Galaxies
classification
🌌 astro-ph
keywords
galaxiesdampedlyman-alphaaboveabsorbersbeganchemicaldetected
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We present evidence that damped Lyman-alpha galaxies detected in spectra of quasars may not have started forming stars until the redshift z~3. If damped Lyman-alpha absorbers are the progenitors of disk galaxies, then the above result may indicate that star formation in galactic disks first began at z~3.
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