J/AJ/139/1713ivo://CDS.VizieR/J/AJ/139/1713doi:10.26093/cds/vizier.51391713CDSCharlot P.Boboltz D.A.Fey A.L.Fomalont E.B.Geldzahler B.J.,Gordon D.Jacobs C.S.Lanyi G.E.Ma C.Naudet C.J.Romney J.D.,Sovers O.J.Zhang L.D.2019-03-29T12:50:16Z2012-06-07T15:45:57ZCDS support team

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

cds-question@unistra.froptical-observationcatalogsastrometryvery-long-baseline-interferometryquasarsWe have measured the submilliarcsecond structure of 274 extragalactic sources at 24 and 43 GHz in order to assess their astrometric suitability for use in a high-frequency celestial reference frame (CRF). Ten sessions of observations with the Very Long Baseline Array have been conducted over the course of ~5 years, with a total of 1339 images produced for the 274 sources. There are several quantities that can be used to characterize the impact of intrinsic source structure on astrometric observations including the source flux density, the flux density variability, the source structure index, the source compactness, and the compactness variability.2010AJ....139.1713Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/139/1713CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/251 : VLBI International Celestial Reference Frame (ICRF) (Ma+, 1997)J/AJ/127/3587 : VLBI ICRF. II (Fey+, 2004)J/AJ/139/1695 : Celestial Reference Frame at 24 and 43GHz. (Lanyi+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/139/1713https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/139/1713http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/139/1713https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/139/1713https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/139/1713http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/139/1713GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/139/1713/table2 (Parameters of naturally weighted images at 24GHz)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/139/1713/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/139/1713/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/139/1713/table2?GETtext/xml+votable180.050000true2.26646.47260.0055555555555555566/110 180 375 376 438 465 532 556 579 597 611 700 911 968 1084 1154 1546 1584 1616 1702 1740 1741 2087 2098 2143 2564 2836 2867 3024 3096 3309 3675 3820 3886 4285 4318 4436 4572 4695 4696 4754 4770 4820 4825 4992 5154 5156 5306 5371 5423 5448 5458 5597 5693 5767 5848 6153 6164 6448 6496 6507 6548 6633 6641 6853 6927 6948 6996 7346 7371 7389 8031 8057 8199 8299 8615 9204 9248 9442 9545 9612 9632 9676 9688 9899 10163 10249 10422 11116 11279 11430 11639 12173 12352 12580 12599 12619 12851 13156 13213 13230 13352 13545 13792 13927 14520 14820 14985 15023 15494 16027 16247 16298 16444 17215 17516 17579 17718 17734 17791 17909 17979 18005 18037 18214 18239 18378 18624 18755 18871 18907 19088 19190 19308 19487 19523 19553 19567 19609 19622 19743 19831 19890 20099 20474 20610 20935 21049 21121 21266 21564 21704 21768 21924 21935 21960 21968 22066 22363 22396 22501 22917 22963 22993 23014 23015 23099 23121 23127 23252 23306 23323 23333 23416 23548 23761 24019 24084 24099 24123 24150 24335 24346 24353 24357 24453 24571 24608 24672 24906 25016 25196 25255 25256 25630 25742 25864 26115 26363 27060 27133 27322 27523 27689 28339 28454 28479 28799 28818 29074 29193 29218 29522 29570 29620 29675 29714 30705 30836 31176 31399 31430 31451 31664 31894 31986 32311 32660 34123 34428 34517 34571 34572 34691 35294 35440 36100 38734 38763 38802 39848 40527 42901 42980 43822 44043 44147 44247 44555 44614 44669 44776 44899 46764 46964 47540 48023 48142 48589 48610 48798 48805 48846 489651.5902566968739225e-23 2.8492099152324443e-23https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/139/1713?format=asciiOpticalRadiodefaultJ/AJ/139/1713/table2Parameters of naturally weighted images at 24GHzrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPapIDisplay data form Paper I, Lanyi et al., J/AJ/139/1695meta.ref.urlcharBNameSource name based on B1950 position (HHMM+DDd)meta.id;meta.maincharprimary43meta.ref.urlcharObsDateObservation datetime.epoch;obsnullableamajBeam FWHM major axis (1)masphys.angSize;instr.beamfloatbmajBeam FWHM minor axis (1)masphys.angSize;instr.beamfloatPA[-90/90] Beam Major axis position angle (measured north through east) (1)degpos.posAng;instr.beamintSpeakPeak flux density (in Jy/beam) (2)Jy/beamphot.flux.density;em.radio.12-30GHzfloatStotTotal flux density (2) (3)Jyphot.flux.density;em.radio.12-30GHzfloatSrmsroot mean square (rms) of the residuals of the final hybrid image (2)mJy/beamstat.errorfloatCLevelsContour Levels, in mJy/beam (4)instr.paramIERSDetails from VLBI International Celestial Reference Frame (Ma et al. 1997, Cat. I/251)meta.ref.urlcharSStructure index for this sourcemeta.ref.urlcharSimbadNameSimbad column added by the CDSmeta.idchar_RARight ascension added by the CDSdegpos.eq.ra;meta.mainnullable_DEDeclination added by the CDSdegpos.eq.dec;meta.mainnullableJ/AJ/139/1713/table3Parameters of naturally weighted images at 43GHzrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBNameSource name based on B1950 position (HHMM+DDd)meta.id;meta.maincharObsDateObservation datetime.epoch;obsnullableamajBeam FWHM major axis (1)masphys.angSize;instr.beamfloatbmajBeam FWHM minor axis (1)masphys.angSize;instr.beamfloatPA[-90/90] Beam Major axis position angle (measured north through east) (1)degpos.posAng;instr.beamintSpeakPeak flux density (in Jy/beam) (2)Jy/beamphot.flux.density;em.mm.30-50GHzfloatStotTotal flux density (2) (3)Jyphot.flux.density;em.mm.30-50GHzfloatSrmsroot mean square (rms) of the residuals of the final hybrid image (2)mJy/beamstat.errorfloatCLevelsContour Levels, in mJy/beam (4)instr.paramIERSDetails from VLBI International Celestial Reference Frame (Ma et al. 1997, Cat. I/251)meta.ref.urlcharSStructure index for this sourcemeta.ref.urlcharJ/AJ/139/1713/table4Source structure indicesBNameSource namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNX? Number of observations in X band (8.5GHz)meta.numberintnullableSX.m? Minimum structure index for X band (8.5GHz) (1)meta.codeintnullableSX.M? Maximum structure index for X band (8.5GHz) (1)meta.codeintnullableNB? Number of observations in B band (24GHz)meta.numberintnullableSB.m? Minimum structure index for B band (24GHz) (1)meta.codeintnullableSB.M? Maximum structure index for B band (24GHz) (1)meta.codeintnullableNQ? Number of observations in Q band (43GHz)meta.numberintnullableSQ.m? Minimum structure index for Q band (43GHz) (1)meta.codeintnullableSQ.M? Maximum structure index for Q band (43GHz) (1)meta.codeintnullableIERSDetails from VLBI International Celestial Reference Frame (Ma et al. 1997, Cat. I/251)meta.ref.urlchar