Initial Chemical Enrichment in Galaxies
Limin Lu, Wallace L. W. Sargent, Thomas A. Barlow
Abstract
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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