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astro-ph.CO2011★ 59 cited
The First High Redshift Quasar from Pan-STARRS
Eric Morganson, Gisella De Rosa, Roberto Decarli +13
We present the discovery of the first high redshift (z > 5.7) quasar from the Panoramic Survey Telescope and Rapid Response System 1 (Pan-STARRS1 or PS1). This quasar was initially…
astro-ph.CO2011★ 219 cited
Evidence for non-evolving FeII/MgII ratios in rapidly accreting z~6 QSOs
Gisella De Rosa, Roberto Decarli, Fabian Walter +5
[abridged] Quasars (QSOs) at the highest known redshift (z~6) are unique probes of the early growth of supermassive black holes (BHs). Until now, only the most luminous QSOs have b…