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astro-ph2003
Extreme gas properties in the most distant quasars
R. Maiolino, E. Oliva, F. Ghinassi +4
We present near-IR, low resolution spectra of eight of the most distant quasars known, with redshifts in the range 4.9<z<6.4. Half of these quasars are characterized by deep, broad…
astro-ph2003
Early star formation traced by the highest redshift quasars
R. Maiolino, Y. Juarez, R. Mujica +2
The iron abundance relative to alpha-elements in the circumnuclear region of quasars is regarded as a clock of the star formation history and, more specifically, of the enrichment…