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astro-ph2001★ 84 cited
High Redshift Quasars and Star Formation in the Early Universe
M. Dietrich, I. Appenzeller, M. Vestergaard +1
In order to derive information on the star formation history in the early universe we observed 6 high-redshift (z=3.4) quasars in the near-infrared to measure the relative iron and…
astro-ph2001
High Redshift Quasars and Star Formation History
Matthias Dietrich, Fred Hamann
Quasars are among the most luminous objects in the universe, and they can be studied in detail up to the highest known redshift. Assuming that the gas associated with quasars is cl…