Figure 9 from Efficient Photometric Selection of Quasars from the Sloan Digital Sky Survey. II. ∼1,000,000 Quasars from Data Release 6

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Efficient Photometric Selection of Quasars from the Sloan Digital Sky Survey. II. ∼1,000,000 Quasars from Data Release 6

Authors: Gordon T. Richards, Adam D. Myers, Alexander G. Gray, Ryan N. Riegel, Robert C. Nichol, Robert J. Brunner, Alexander S. Szalay, Donald P. Schneider, and Scott F. Anderson

RICHARDS et al. 2009 The Astrophysical Journal Supplement Series 180 67.

Provider: AAS Journals

Caption: Figure 9.

Fraction of training set quasars recovered as a function of magnitude. The overall recovered fraction (completeness) is 93.4%. Somewhat higher levels of incompleteness are found at z ~ 2.8 and z ~ 3.5, where it is particularly difficult to cleanly separate stars from quasars in SDSS color space. The gray histogram and right-hand axis give the redshift distribution of the quasar training set.

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