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<ri:Resource created="2005-03-18T02:49:08Z" status="active" updated="2025-05-19T09:50:00Z" version="1.2" xmlns:cs="http://www.ivoa.net/xml/ConeSearch/v1.0" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.ivoa.net/xml/ConeSearch/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/ConeSearch.xsd http://www.ivoa.net/xml/VOResource/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VOResource.xsd http://www.ivoa.net/xml/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd" xsi:type="vs:CatalogService"><title>A catalogue of faint UV-excess objects</title><shortName>J/MNRAS/243/1</shortName><identifier>ivo://CDS.VizieR/J/MNRAS/243/1</identifier><altIdentifier>doi:10.26093/cds/vizier.72430001</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Boyle B.J.</name></creator><creator><name>Fong R.</name></creator><creator><name>Shanks T.</name></creator><creator><name>Peterson B.A.</name></creator><date role="Updated">2012-09-24T07:25:20Z</date><date role="Created">2005-03-18T02:49:08Z</date><contact><name>CDS support team</name><address>CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France</address><email>cds-question@unistra.fr</email></contact></curation><content><subject>quasars</subject><subject>ultraviolet-photometry</subject><subject>spectroscopy</subject><subject>ultraviolet-astronomy</subject><description>Spectra, positions, magnitudes and colours are presented for 1400 faint (B&lt;~21mag) stellar objects identified in a complete, ultraviolet-excess (UVX) survey. The objects were selected from COSMOS machine measurements of UK Schmidt U and J plates and observed with the Fibre Optic Coupled Aperture Plate (FOCAP) system at the Anglo-Australian Telescope (AAT). In total, 420 QSOs were identified, of which nine belong to the broad absorption line (BAL) class of QSOs. A further 57 galaxies with narrow emission lines were found. Halo subdwarfs from the vast majority (~90 per cent) of the 824 galactic stars identified in this survey; the remaining galactic stars are comprised principally of hot white dwarfs (42 objects) and horizontal branch stars (nine objects). Updated versions of the QSO number-magnitude relation and luminosity function derived from this survey are also presented in this paper.</description><source format="bibcode">1990MNRAS.243....1B</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/243/1</referenceURL><type>Catalog</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/TAP">TAP VizieR generic service</relatedResource></relationship><relationship><relationshipType>IsServedBy</relationshipType><relatedResource>Conesearch service</relatedResource></relationship><relationship><relationshipType>related-to</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/251/482">J/MNRAS/251/482 : A spectroscopic survey of faint QSOs (Boyle+ 1991)</relatedResource></relationship></content><rights>https://cds.unistra.fr/vizier-org/licences_vizier.html</rights><capability><interface xsi:type="vr:WebBrowser"><accessURL 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48498</spatial><spectral>4.0234554602041486e-19 4.920466254354166e-19</spectral><footprint ivo-id="ivo://ivoa.net/std/moc">https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/243/1?format=ascii</footprint><waveband>UV</waveband></coverage><tableset><schema><name>default</name><table><name>J/MNRAS/243/1/table6</name><description>The QSO catalogue</description><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>Name</name><description>Extended IAU coordinate designation</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="11*">char</dataType></column><column><name>FOCAP</name><description>FOCAP area name followed by the fibre number</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType" arraysize="7*">char</dataType></column><column><name>RA1950</name><description>Right ascension 1950</description><ucd>pos.eq.ra;meta.main</ucd></column><column><name>DE1950</name><description>Declination 1950</description><ucd>pos.eq.dec;meta.main</ucd></column><column><name>b</name><description>Calibrated COSMOS magnitude, b = Bj + 0.14mag</description><unit>mag</unit><ucd>phot.mag;em.opt.B</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>u-b</name><description>Colour obtained from calibrated COSMOS magnitude</description><unit>mag</unit><ucd>phot.color;em.opt.U;em.opt.B</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>ID</name><description>Identification of object (1)</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType" arraysize="4*">char</dataType></column><column><name>z</name><description>? emission line redshift</description><ucd>src.redshift</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>q_z</name><description>[123] Estimate of the redshift quality (2)</description><ucd>meta.code.qual;src.redshift</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>Lyalpha</name><description>? Rest equivalent width of the emission lines of Lyalpha + N V</description><ucd>spect.line.eqWidth</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>CIV</name><description>? Rest equivalent width of the emission lines of CIV</description><ucd>spect.line.eqWidth</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>C[III]</name><description>? Rest equivalent width of the emission lines of C[III]</description><ucd>spect.line.eqWidth</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>MgII</name><description>? Rest equivalent width of the emission lines of Mg II</description><ucd>spect.line.eqWidth</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>_RA.icrs</name><description>Right ascension (ICRS) (computed by VizieR, not part of the original data)</description><ucd>pos.eq.ra</ucd><flag>nullable</flag><flag>indexed</flag></column><column><name>_DE.icrs</name><description>Declination (ICRS) (computed by VizieR, not part of the original data)</description><ucd>pos.eq.dec</ucd><flag>nullable</flag><flag>indexed</flag></column></table><table><name>J/MNRAS/243/1/table7</name><description>The stellar catalogue</description><column><name>ID</name><description>Identification of object (1)</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType" arraysize="4*">char</dataType></column><column><name>recno</name><description>Record number assigned by the VizieR team. 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Rest equivalent width of the emission lines of Lyalpha + N V</description><ucd>spect.line.eqWidth</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>CIV</name><description>? Rest equivalent width of the emission lines of CIV</description><ucd>spect.line.eqWidth</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>C[III]</name><description>? Rest equivalent width of the emission lines of C[III]</description><ucd>spect.line.eqWidth</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>MgII</name><description>? 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Rest equivalent width of the emission lines of Lyalpha + N V</description><ucd>spect.line.eqWidth</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>CIV</name><description>? Rest equivalent width of the emission lines of CIV</description><ucd>spect.line.eqWidth</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>C[III]</name><description>? Rest equivalent width of the emission lines of C[III]</description><ucd>spect.line.eqWidth</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>MgII</name><description>? 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