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| Paper: |
Luminosity function of quasars at large redshifts from GRISM surveys |
| Volume: |
21, The Space Distribution of Quasars |
| Page: |
109 |
| Authors: |
Schmidt, Maarten; Schneider, Donald P.; Gunn, James E. |
| Abstract: |
We have carried out a systematic search for emission-line objects through photometrically calibrated CCD grism surveys with the Palomar 200-inch telescope in transit mode, covering 62 square degrees. These surveys have yielded 141 quasars detected by their C IV or Ly-alpha emission in the redshift range 2.0 - 4.7. We use this sample and the known flux limits to derive the slope of the luminosity function and the space density above a given line luminosity, as a function of redshift. While space densities are approximately constant at redshifts 2.0 - 3.0, they are declining steeply for redshifts larger than 3. |
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