NOIRLab/NSF/AURA
The Most Distant Quasar: Both Headache And Opportunity
GNIRS spectrum (black line) of ULAS J1120+0641. The red line marks the 1sigma error spectrum. Prominent emission lines are marked. The green line is a composite spectrum formed by averaging the spectra of z = 2.2-2.6 quasars in SDSS.
