Luminous quasars at high redshift

Details Luminous quasars at high redshift Luminous quasars at high redshift

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.244....1m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 244, May 1, 1990, p. 1-7.

Astronomy and Astrophysics

Astronomy

25

Luminosity, Quasars, Red Shift, Sky Surveys (Astronomy), Astronomical Photometry, Astronomical Spectroscopy, Ubv Spectra

Scientific paper

Three bright (r = 17.4, 17.7, and 18.2) quasars with high redshifts (z = 3.4, 3.7, and 3.5) have been located from an accurately calibrated optical survey in five wavebands. The completeness of the survey is about 50 percent at r less than 18.5 and the corrected surface density of quasars with r between 17 and 18.5 and z between 3.4 and 4.1 is 0.02-0.08/sq deg, lower than, but not significantly different from, estimates based on emission-line surveys for such quasars. The luminosity function of luminous quasars at high redshift has the same amplitude as at a redshift of about 2.

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