The Mid-IR and X-ray Selected QSO Luminosity Function

Details The Mid-IR and X-ray Selected QSO Luminosity Function The Mid-IR and X-ray Selected QSO Luminosity Function

2010-01-25

arxiv.org/abs/1001.4529v3

Astrophys. J. 728 (2011) 56

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Corrected minor typo in equations (4) and (6). Accepted for publication in The Astrophysical Journal. 56 pages + 6 tables + 16

Scientific paper

We present the J-band luminosity function of 1838 mid-infrared and X-ray selected AGNs in the redshift range 03 we observe a decrease in the space density of quasars of all brightnesses. We model the luminosity function by a double power-law and find that its evolution cannot be described by either pure luminosity or pure density evolution, but must be a combination of both. Our best-fit model has bright and faint power-law indices consistent with the low redshift measurements based on the 2QZ and 2SLAQ surveys and it generally agrees with the number of bright quasars predicted by other LFs at all redshifts. If we construct the QSO luminosity function using only the IRAC-selected AGNs, we find that the biases inherent to this selection method significantly modify the behavior of phi*(z) only for z<1 and have no significant impact upon the characteristic magnitude M*_J(z).

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