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<ri:Resource created="1998-03-05T22:10:17Z" 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>MRC/1Jy Radio source survey. I.</title><shortName>J/ApJS/107/19</shortName><identifier>ivo://CDS.VizieR/J/ApJS/107/19</identifier><altIdentifier>doi:10.26093/cds/vizier.21070019</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>McCarthy P.J.</name></creator><creator><name>Kapahi V.K.</name></creator><creator><name>van Breugel W.</name></creator><creator><name>Persson S.E.</name></creator><creator><name>Athreya R.,Subrahmanya C.R.</name></creator><date role="Updated">2013-02-27T06:23:15Z</date><date role="Created">1998-03-05T22:10:17Z</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>radio-galaxies</subject><subject>redshifted</subject><subject>apparent-magnitude</subject><description>This is the first in a series of papers discussing the properties of a complete set of radio sources selected near S408=1Jy. We present optical or infrared identifications for a sample of 452 radio galaxies. The sources were selected from the 408MHz Molonglo Reference Catalog, restricted only by flux density and position on the sky, as follows: S408&gt;0.95Jy and -30&lt;decl.(1950)&lt;-20, and 9h20m&lt;R.A.(1950)&lt;14h4m or 20h20m&lt;R.A.(1950)&lt;6h14m. This complete sample, the MRC/1 Jy survey, contains 558 radio galaxies or quasars, of which six are occulted by bright stars or galaxies and two are multiple confused sources. Of the remaining 550 sources, 527, or 96%, are identified to an r magnitude of 25, and eight additional sources are identified to K=19. Of the 17 unocculted objects that remain unidentified, 15 are sources for which we have either poor radio maps or inadequate optical/IR images. This paper presents finding charts and astrometric positions for the 452 sources that are not identified as either quasars or BL Lacertae objects. Magnitudes in the r passband accurate to typically 0.1mag are given for 353 of the radio galaxy identifications. Redshifts for 268 of the galaxies are also listed; these have been derived from 450 spectroscopic observations. The radio observations, quasar and BL Lac identifications, spectroscopy, and near-IR images will be presented in subsequent papers in this series.</description><source format="bibcode">1996ApJS..107...19M</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/107/19</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/VIII/16">VIII/16 : Molonglo Reference Catalogue of Radio Sources (Large+ 1991)</relatedResource></relationship></content><rights>https://cds.unistra.fr/vizier-org/licences_vizier.html</rights><capability><interface 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Redshift</description><ucd>src.redshift</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>u_z</name><description>Uncertainty flag on z</description><ucd>meta.code.error;src.redshift</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>l_rmag</name><description>Limit flag on rmag</description><ucd>meta.code.error</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>rmag</name><description>? r magnitude (2)</description><unit>mag</unit><ucd>phot.mag;em.opt.R</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>u_rmag</name><description>Uncertainty flag on rmag</description><ucd>meta.code.error</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>FOV</name><description>? Field of view codes (4)</description><ucd>meta.code</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>Run</name><description>Run numbers (3)</description><ucd>meta.number</ucd><dataType xsi:type="vs:VOTableType" arraysize="5*">char</dataType></column><column><name>Note</name><description>[N] Note detailed in file notes.dat</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>Rem</name><description>Remark</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="30*">char</dataType></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/ApJS/107/19/notes</name><description>Notes of table2</description><column><name>recno</name><description>Record number assigned by the VizieR team. 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