J/A+A/484/119ivo://CDS.VizieR/J/A+A/484/119doi:10.26093/cds/vizier.34840119CDSBritzen S.Vermeulen R.C.Campbell R.M.Taylor G.B.Pearson T.J.,Readhead A.C.S.Xu W.Browne I.W.Henstock D.R.Wilkinson P.2017-10-09T13:34:48Z2008-06-30T20:35:03ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fractive-galactic-nucleibl-lacertae-objectsradio-galaxiesradio-sourcesvery-long-baseline-interferometryThis is the second in a series of papers presenting VLBI observations of the 293 Caltech-Jodrell Bank Flat-spectrum (hereafter CJF) sources and their analysis. We obtain a consistent motion dataset large enough to allow the systematic properties of the population to be studied. We present detailed kinematic analysis of the complete flux-density limited CJF survey. We computed 2-D kinematic models based on the optimal model-fitting parameters of multi-epoch VLBA observations. This allows us to calculate not only radial, but also orthogonal motions, and thus to study curvature and acceleration. Statistical tests of the motions measured and their reliability were performed. A correlation analysis between the derived apparent motions, luminosities, spectral indices, and core dominance and the resulting consequences is described. With at least one velocity in each of the 237 sources, this sample is much larger than any available before, so it allows a meaning ful statistical investigation of apparent motions and any possible correlations with other parameters in AGN jets. The main results to emerge are as follows: * In general motions are not consistent with a single uniform velocity applicable to all components along a jet. * We find a slight trend towards a positive outward acceleration and also adduce some evidence for greater acceleration in the innermost regions. * We find a lack of fast components at physical distances less than a few pc from the reference feature. * Only ~4% of the components from galaxies and <2% of those from quasars undergo large bends i.e. within 15{deg} of +/-90{deg}. * The distribution of radial velocities shows a broad distribution of velocities (apparent velocities up to 30c). Fifteen percent of the best-sampled jet components exhibit low velocities that may need to be explained in a different manner to the fast motions. * Some negative superluminal motions are seen, and in 15 cases (6%) these are definitely significant. * We find a strong correlation between the 5 GHz luminosity and the apparent velocity. * The CJF galaxies, on average, show slower apparent jet-component velocities than the quasars. * The mean velocity in the VLBA 2cm survey (Kellermann et al. 2004) is substantially higher than in the CJF survey, the ratio could be roughly a factor of 1.5-2. This supports the observed trend toward increasing apparent velocity with in creasing observing frequency. This AGN survey provides the basis for any statistical analysis of jet and jet-component properties.2008A&A...484..119Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/484/119CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/472/763 : Multi-epoch VLBI survey of CJF sources (Britzen+, 2007)J/A+A/476/759 : X-ray properties of AGN from the CJF sample (Britzen+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/484/119https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/484/119http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/484/119https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/484/119https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/484/119http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/484/119GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/484/119/sources (Source list)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/484/119/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/484/119/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/484/119/sources?GETtext/xml+votable180.050000true1.488229238.33754720.0055555555555555566/991 1018-1019 1584 1701-1702 1875 1909 2280 2397 2404 2414 2441 2531 2605 2631 2694 2710 2721 2836 2854 2867 3402 3541 3820 3886 3951 3971 4027 4054 5103 5352-5353 5367 5371 5423 5432 5448 5460 5535 5546 5574 5589 5657 5673 5693 5767 5817 5838 5848 5867 5974 5999 6014 6033 6035 6067 6104 6118 6377 6399 6422 6448 6479 6496 6507 6548 6576 6601 6633 6641 6716 6751 6755 6790 6831 6853 6923 6934 6946 6948 6976 6984 6996 7030 7054 7119 7129 7148 7181 7195 7222 7235 7245 7343 7345-7346 7351 7370-7371 7389 7446 7472 7492 7570 7623 7642 7653 7709 7716 7745 7808 7851 7896 7911 7915 7937 7969 8008 8031 8057 8067 8077 8147 9202 9204 9460 9497 9545 9566 9570 9588 9612 9633 9636 9676 9681 9688 9714 9720 9723 9813 9899 9956 9966 9976 9978 9998 10006 10030 10078 10103 10112 10137 10163 10170 10186 10228 10474 10524 10545 10566 10597 10654 10695 10710 10726 10798 10802-10803 10836 10886 10932 10983 11009 11024 11055 11094 11099 11106 11116 11118 11153 11176 11212 11216 11279 11407 11430 11514 11552 11594 11631 11639-11640 11669 11686 11715 11808 11833 11845 12091 12173 12209 12211 12218 12258 13545 13614 13625 13693 13722 13731 13769 13789 13792 13883 13927 14842 14874 14916 14946 14994 15014 15143 15178 15196 15286 15288 15344 15602 15819 15852 15881 15916 15936 15973 16027 16049 16059 16081 16083 16093 16113 16170 16247 16261 16272 16281 16298 16302 16333 20468 20474 20476 28628 28643 32725 32764https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/484/119?format=asciiRadiodefaultJ/A+A/484/119/sourcesSource listrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIAU-name of the source HHMM+DDd (B1950), CJF BHHMM+DDd in Simbadmeta.idcharprimaryName2000Name with J2000 positionmeta.idcharFileNameRImage name of pmtot, pmr and pmphi as function of radial distance from the core, in subdirectory figmeta.id;meta.filecharFileNameTImage name x and y of each component as a function of time, in subdirectory fig (1)meta.id;meta.filecharFileNameXYImage name of positions of all components at all epochs, in subdirectory fig (2)meta.id;meta.filecharSimbadNameSimbad column added by the CDSmeta.idcharPaperIDisplay the data from paper I (J/A+A/472/763)meta.ref.urlchar_RAComputed Right Ascension for Equinox: J2000degpos.eq.ra;meta.main_DEComputed Declination for Equinox: J2000degpos.eq.dec;meta.mainJ/A+A/484/119/tablec1The kinematic properties of 779 AGN-componentsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIAU-name of the source HHMM+DDd (B1950), CJF BHHMM+DDd in Simbadmeta.idcharClassOptical classification (1)src.classcharl_z[>=] Limit flag on zmeta.code.error;src.redshiftcharz? Redshift, see details in papersrc.redshiftfloatnullableu_z[?] Uncertainty flag on zmeta.code.error;src.redshiftcharCompJet-component identification (2)meta.code.multipcharq[1/3] Quality class (3)srcintNDetNumber of times this component has been detectedmeta.numberintSpanTime span from the first to the last detectionyrtime.intervalfloatEpochReference epoch -2400000dmeta.ref;time.epochdoubleX0Component position at the reference epoch in rectangular X-coordinatemaspos.cartesianfloate_X0? rms uncertainty on X0 (4)masstat.error;pos.cartesian.xfloatnullableY0Component position at the reference epoch in rectangular Y-coordinatemaspos.cartesian.y;instr.detfloate_Y0? rms uncertainty on Y0 (4)masstat.error;pos.cartesian.yfloatnullablepmXProper motion components in Xmas/yrpos.pm;pos.cartesian.xfloate_pmX? rms uncertainty on pmX (4)mas/yrstat.errorfloatnullablepmYProper motion components in Ymas/yrpos.pm;pos.cartesian.yfloate_pmY? rms uncertainty on pmY (4)mas/yrstat.errorfloatnullablepmrRadial proper motion componentmas/yrpos.pmfloate_pmr? rms uncertainty on pmr (4)mas/yrstat.errorfloatnullablepmphiOrthogonal proper motion componentmas/yrpos.pmfloate_pmphi? rms uncertainty on pmphi (4)mas/yrstat.errorfloatnullablepmtotTotal proper motion, calculated from pmx, pmymas/yrpos.pm;meta.modelledfloate_pmtot? rms uncertainty on pmtot (4)mas/yrstat.errorfloatnullablebetar? Radial apparent velocitycspect.dopplerVeloc;pos.heliocentricfloatnullablee_betar? rms uncertainty on betar (4)cstat.errorfloatnullablebetaphi? Orthogonal apparent velocitycphys.veloc.transversefloatnullablee_betaphi? rms uncertainty on betaphi (4)cstat.errorfloatnullablebetatot? Total apparent velocitycphys.velocfloatnullablee_betatot? rms uncertainty on betatot (4)cstat.errorfloatnullable