First results from the Isaac Newton Telescope Wide Angle Survey: the z > 5 quasar survey
We report the first results of an observational programme designed to determine the luminosity density of high-redshift quasars quasars) using deep multicolour CCD data. We report the discovery and spectra of three high-redshift quasars, including one with . At , this is the fourth highest redshift...
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| Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2001-10, Vol.326 (4), p.L45-L49 |
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| container_title | Monthly notices of the Royal Astronomical Society |
| container_volume | 326 |
| creator | Sharp, R.G. McMahon, R.G. Irwin, M.J. Hodgkin, S.T. |
| description | We report the first results of an observational programme designed to determine the luminosity density of high-redshift quasars quasars) using deep multicolour CCD data. We report the discovery and spectra of three high-redshift quasars, including one with . At , this is the fourth highest redshift quasar currently published. Using these preliminary results we derive an estimate of the quasar space density in the redshift range of . When completed, the survey will provide a firm constraint on the contribution to the ionizing UV background in the redshift range from quasars by determining the faint-end slope of the quasar luminosity function. The survey uses imaging data taken with the 2.5-m Isaac Newton Telescope as part of the Public Isaac Newton Group Wide Field Survey (WFS). This initial sample of objects is taken from two fields of effective area ∼12.5 deg2 from the final ∼100 deg2. |
| doi_str_mv | 10.1111/j.1365-2966.2001.04845.x |
| format | Article |
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We report the discovery and spectra of three high-redshift quasars, including one with . At , this is the fourth highest redshift quasar currently published. Using these preliminary results we derive an estimate of the quasar space density in the redshift range of . When completed, the survey will provide a firm constraint on the contribution to the ionizing UV background in the redshift range from quasars by determining the faint-end slope of the quasar luminosity function. The survey uses imaging data taken with the 2.5-m Isaac Newton Telescope as part of the Public Isaac Newton Group Wide Field Survey (WFS). 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Not. R. Astron. Soc</stitle><addtitle>Mon. Not. R. Astron. Soc</addtitle><date>2001-10-01</date><risdate>2001</risdate><volume>326</volume><issue>4</issue><spage>L45</spage><epage>L49</epage><pages>L45-L49</pages><issn>0035-8711</issn><eissn>1365-2966</eissn><abstract>We report the first results of an observational programme designed to determine the luminosity density of high-redshift quasars quasars) using deep multicolour CCD data. We report the discovery and spectra of three high-redshift quasars, including one with . At , this is the fourth highest redshift quasar currently published. Using these preliminary results we derive an estimate of the quasar space density in the redshift range of . When completed, the survey will provide a firm constraint on the contribution to the ionizing UV background in the redshift range from quasars by determining the faint-end slope of the quasar luminosity function. 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| identifier | ISSN: 0035-8711 |
| ispartof | Monthly notices of the Royal Astronomical Society, 2001-10, Vol.326 (4), p.L45-L49 |
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| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete; Oxford Journals Open Access Collection |
| subjects | galaxies: active quasars: general |
| title | First results from the Isaac Newton Telescope Wide Angle Survey: the z > 5 quasar survey |
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