Title | Evidence for Non-evolving Fe II/Mg II Ratios in Rapidly Accreting z ~ 6 QSOs |
Authors | De Rosa, G.; Decarli, R.; Walter, F.; Fan, X.; Jiang, L.; Kurk, J.; Pasquali, A.; Rix, H. ... |
Bibcode | 2011ApJ...739...56D Search ADS ↗ |
Abstract | 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 been studied, often one object at a time. Here we present the most extensive consistent analysis to date of 4 < z < 6.5 QSOs with observed near-infrared spectra, combining three new z ~ 6 objects from our ongoing Very Large Telescope-Infrared Spectro ... |
Objects | 22 Objects Search NED ↙ |