The 2dF QSO Redshift Survey - I. The Optical QSO Luminosity Function

Details The 2dF QSO Redshift Survey - I. The Optical QSO Luminosity Function The 2dF QSO Redshift Survey - I. The Optical QSO Luminosity Function

2000-05-18

arxiv.org/abs/astro-ph/0005368v1

Mon.Not.Roy.Astron.Soc.317:1014,2000

Astronomy and Astrophysics

Astrophysics

Accepted for publication in MNRAS. 10 pages, 7 figures

Scientific paper

10.1046/j.1365-8711.2000.03730.x

We present a determination of the optical QSO luminosity function and its cosmological evolution with redshift for a sample of over 6000 QSOs identified primarily from the first observations of the 2dF QSO Redshift Survey (2QZ). For QSOs with -26 < M_B < -23 and 0.35 < z < 2.3, we find that pure luminosity evolution (PLE) models provide an acceptable fit to the observed redshift dependence of the luminosity function. The luminosity function is best fit by a two-power-law function of the form. Exponential luminosity evolution models, both as a function of look-back time, and as a general second-order polynomial with redshift, were found to provide acceptable fits to the dataset comprising the 2QZ and the Large Bright Quasar Survey. Exponential evolution with look-back time is prefered for q_0=0.05, while the polynomial evolution model is prefered for q_0=0.5. The shape and evolution of the LF at low redshifts (z<0.5) and/or high luminosities, not currently well sampled by the 2dF QSO survey, may show departures from pure luminosity evolution, but the results presented here show that over a significant range of redshift, PLE is a good description of QSO evolution.

Affiliated with

Also associated with

No associations

Rating

The 2dF QSO Redshift Survey - I. The Optical QSO Luminosity Function does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The 2dF QSO Redshift Survey - I. The Optical QSO Luminosity Function, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The 2dF QSO Redshift Survey - I. The Optical QSO Luminosity Function will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-374231