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<ri:Resource created="2025-07-21T13:39:45Z" status="active" updated="2025-08-01T08:20:05Z" version="1.2" 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/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>Multiepoch ~2-43GHz VLBI monitoring obs. of OJ 287</title><shortName>J/ApJ/949/20</shortName><identifier>ivo://CDS.VizieR/J/ApJ/949/20</identifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Yuan Q.</name></creator><creator><name>Zhang M.</name></creator><creator><name>Liu X.</name></creator><creator><name>Jiang P.F.</name></creator><creator><name>Kokhirova G.I.</name></creator><date role="Updated">2025-08-01T08:20:05Z</date><date role="Created">2025-07-21T13:39:45Z</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>bl-lacertae-objects</subject><subject>interferometry</subject><subject>radio-sources</subject><description>We collected the archival data of blazar OJ 287 from heterogeneous very long baseline interferometry monitoring programs at 2.3, 8.6, 15, and 43GHz. The data reduction and observable extraction of those multiband, multiepoch observations are batch-processed consistently with our automated pipeline. We present the multivariate correlation analysis on the observables at each band. We employ the cross-correlation function to search the correlations and the Monte Carlo technique to verify the certainty of correlations. Several correlations are found. The foremost findings are the correlations between the core flux density and the jet position angles on different scales, which validated the plausible predictions of the jet with precession characteristics. Meanwhile, there is a variation in the offset between the core electric vector position angle and the inner-jet position angle over time at 15 and 43 GHz.</description><source format="bibcode">2023ApJ...949...20Y</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/949/20</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>related-to</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/522/846">J/ApJ/522/846 : Optical monitoring of GeV loud blazars (Xie+, 1999)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+AS/139/545">J/A+AS/139/545 : 1-22 GHz spectra survey (Kovalev+, 1999)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+AS/143/357">J/A+AS/143/357 : Tuorla Quasar Monitoring (Katajainen+ 2000)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+AS/146/141">J/A+AS/146/141 : Intensive monitoring of OJ 287 (Pursimo+, 2000)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/609/539">J/ApJ/609/539 : Kinematics of parsec-scale radio jets (Kellermann+, 2004)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/613/682">J/ApJ/613/682 : AGN central masses (Peterson+, 2004)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/130/1418">J/AJ/130/1418 : AGN jet kinematics (Jorstad+, 2005)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/130/1389">J/AJ/130/1389 : Linear polarization of AGN jets at 15GHz (Lister+, 2005)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/131/1262">J/AJ/131/1262 : Circular pol. images at 15GHz of AGN jets (Homan+, 2006)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/134/799">J/AJ/134/799 : Multiwaveband polarimetry of 15 AGN (Jorstad+, 2007)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/466/63">J/A+A/466/63 : VLBI observations of BL Lac objects (Wu+, 2007)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/137/3718">J/AJ/137/3718 : 15GHz monitoring of AGN jets with VLBA (Lister+, 2009)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/138/1874">J/AJ/138/1874 : MOJAVE. 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Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>Epoch</name><description>[1994.5/2020.9] Date of observation, Bessellian year</description><unit>yr</unit><ucd>time.epoch;obs</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>Freq</name><description>[2.3/43] Observing frequency</description><unit>GHz</unit><ucd>em.freq</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Icore</name><description>[0.5/9.3] Flux density of the fitted Gaussian core component</description><unit>Jy</unit><ucd>phot.flux.density;em.radio</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_Icore</name><description>[0.028/0.5] Uncertainty in Icore</description><unit>Jy</unit><ucd>stat.error;phot.flux.density;em.radio</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Maj</name><description>[0.2/3.63]? Major axis, fitted Gaussian core component</description><unit>mas</unit><ucd>phys.angSize;phys.size.diameter</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>Min</name><description>[0.18/3.2]? Minor axis, fitted Gaussian core component</description><unit>mas</unit><ucd>phys.angSize;src</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>PA</name><description>[-171.2/90.3]? Position Angle, fitted Gaussian core component</description><unit>deg</unit><ucd>pos.posAng</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_PA</name><description>[0/1]? Uncertainty in PA</description><unit>deg</unit><ucd>stat.error;pos.posAng</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>EVPA</name><description>[-84.4/85.4]? EVPA of the fitted Gaussian core component</description><unit>deg</unit><ucd>pos.posAng;phys.polarization</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_EVPA</name><description>[3/19]? Uncertainty in EVPA</description><unit>deg</unit><ucd>stat.error;pos.posAng;phys.polarization</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column></table><table><name>J/ApJ/949/20/table2</name><description>Jet components properties</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>Epoch</name><description>[1994.5/2020.9] Date of Observation, Bessellian year</description><unit>yr</unit><ucd>time.epoch;obs</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>Freq</name><description>[2.3/43] Observing Frequency</description><unit>GHz</unit><ucd>em.freq</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>ID</name><description>[1/9] Fitted jet component number</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>dRA</name><description>[-7.2/0.61] Jet offset from core in Right Ascension</description><unit>mas</unit><ucd>pos.eq.ra;arith.diff</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>dDE</name><description>[-4.6/1] Jet offset from core in Declination</description><unit>mas</unit><ucd>pos.eq.dec;arith.diff</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>JPA</name><description>[-150/-14] Jet position angle, fitting regression line</description><unit>deg</unit><ucd>pos.posAng;stat.fit</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column></table></schema></tableset></ri:Resource>