Stellar rejection vs. z > 2.15 quasar completeness for five years of Pan-STARRS simulated data. The depth varies from g < 21 (blue dots) to g < 23 (red triangles). The green dot-dashed lines show the effect of a factor of 2 uncertainty on the quasar LF for 22 < g < 23. The red dotted lines illustrate the effect of a ± 5% change on the quasar recovery efficiency. The red dashed line indicates the expected improvement by combining variability and color selections. From left to right, points correspond to yNN = 0.95, 0.92, 0.87, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, 0.1 and 0.
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