J/ApJS/135/155ivo://CDS.VizieR/J/ApJS/135/155doi:10.26093/cds/vizier.21350155CDSMattox J.R.Hartman R.C.Reimer O.2018-01-10T11:47:40Z2001-12-30T21:39:47ZCDS support team

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

cds-question@unistra.frgamma-ray-astronomyradio-sourcesastronomical-object-identificationThe method of Mattox et al. (1996ApJ...461..396M) for identifying EGRET sources with 5GHz radio sources has been applied to the 3EG EGRET catalog of Hartman et al. (1999, Cat. <J/ApJS/123/79>). Complete results are tabulated. We tabulate separately 46 EGRET sources with radio identifications which we expect to have a high probability of being correct. We suggest that these sources are appropriate for most studies of the properties of {gamma}-ray blazars as a class. All but one of these 46 sources were classified by Hartman et al. (1999, Cat. <J/ApJS/123/79>) as high-confidence identifications; and the additional source was classified by Hartman et al. (1999, Cat. <J/ApJS/123/79>) as a plausible identification. We also tabulate separately 37 additional "plausible identifications of EGRET sources with radio sources." These less secure possibilities include the remaining 21 "high-confidence identifications" of Hartman et al. (1999, Cat. <J/ApJS/123/79>), three of the 27 "lower confidence potential blazar identifications" of Hartman et al. (1999, Cat. <J/ApJS/123/79>), and an additional 15 plausible identifications which have not been suggested previously. Many of these sources require new radio and optical observations to establish them as blazars. We suggest that the 23 "lower-confidence potential blazar identifications" of Hartman et al. (1999, Cat. <J/ApJS/123/79>) which we do not find plausible should not be used in studies of the properties of the EGRET blazars. For this analysis, we have made elliptical fits to the 95% confidence contours of the position uncertainty regions of the 3EG sources.2001ApJS..135..155Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/135/155CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/13 : A new catalog of 53522 4.85GHz sources (Becker+ 1991)J/ApJ/481/95 : Radio identification of EGRET sources (Mattox+ 1997)J/ApJS/101/259 : The second EGRET catalog (Thompson+ 1995)J/ApJS/107/227 : Supplement to Second EGRET Catalog (Thompson+ 1996)J/ApJS/123/79 : Third EGRET catalog (3EG) (Hartman+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/135/155https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/135/155http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/135/155https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/135/155https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/135/155http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/135/155GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/135/155/table3 (Plausible EGRET Identifications)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/135/155/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/135/155/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/135/155/table3?GETtext/xml+votable180.050000true19.57703752.9683250.005555555555555556Cone search capability for table J/ApJS/135/155/table4 (Elliptical fits to the 95% confidence position contours of all 3EG EGRET sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/135/155/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/135/155/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/135/155/table4?GETtext/xml+votable180.050000true2.473.190.0055555555555555566/332 437 438 515 556 579 594 909 1085 1128 1143 1262 1362 1487 1509 1560 1985 2414 3145 3308 3356 3649 3819 4695 4820 5423 5816 5847 6069 6618 6640 6646 6822 7004 7255 7576 7592 7896 7969 8514 8515 9442 9460 10064 10202 10250 10340 10527 10910 11075 12155 12283 12441 12466 12467 13354 13687 13693 13768 13927 14424 14611 14622 14641 14690 14693 14702 14707 15309 15310 15567 15646 15763 15947 15968 17236 17411 18208 18496 18718 19398 19421 20097 20110 20145 20224 20225 20472 20552 20647 21121 21321 21324 21371 21430 21769 21974 22252 22255 22517 22919 22947 23022 23099 23121 23309 23406 23410 23416 23433 23518 23524 23546 23588 23952 23960 23995 24081 24185 24260 24269 24283 24300 24302 24449 25022 25068 25214 25625 25834 25864 26115 26118 26131 26245 26292 26314 26342 26614 26620 26983 28083 28092 28433 28477 28492 28493 28673 28675 28767 28809 28825 28830 28848 28894 28912 28935 29009 29016 29024 29072 29119 29190 29249 29261 29311 29324 29374 29469 29505 29539 29570 29593 29615 29641 29692 29714 29715 29720 29836 30114 30241 30247 30319 30388 30594 30716 30724 30746 30783 30807 30842 30860 31003 31044 31113 31187 31190 31255 31665 32131 32589 32594 32637 33094 33605 33825 33826 34123 34184 34260 35078 35304 36187 36188 36839 36958 37343 37361 37365 37566 37768 37803 37819 37822 37887 37928 38017 38081 39034 39131 39197 39239 39241 39248 39267 39548 39746 39962 40762 41003 41046 41088 41340 41663 41681 41685 42143 42197 42224 42356 42376 42384 42411 42435 42486 42753 42806 42901 42935 42949 42980 42981 43118 43252 43262 43359 43366 43596 43822 44058 44244 44247 44331 44357 44629 44813 44909 45131 45219 45373 46055 46290 47014 47107 47493 47534 47633 47648 47862 47873 47876 47895 48123 48270 48685 48839 48874 49071https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/135/155?format=asciiGamma-rayRadiodefaultJ/ApJS/135/155/table2EGRET Identifications with a High Probability of Being Correctz? Redshiftsrc.redshiftfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRNameRadio name, as in table1.meta.id.crosscharNameRadio source name based on 1950 positionmeta.id;meta.maincharOmag? Optical magnitude from NEDmagphot.mag;em.opt.BfloatnullableS4.85GHzFlux density at 4.85GHz from catalog of Becker et al., <VIII/13>mJyphot.flux.density;em.radio.3-6GHzintSp+IndexRadio spectral index (2)spect.indexfloatl_SVLBILimit flag on a SVLBImeta.code.errorcharSVLBI? VLBI flux density at 2.29 GHzmJyphot.flux.density;em.radio.1500-3000MHzintnullablee_SVLBI? Uncertainty in SVLBImJystat.errorintnullableProbThe a posteriori probability of a correct identification (3)stat.fit.goodnessdoubleFluxThe {gamma}-ray flux (E>100MeV) in units of 10^-6^cm^-2^s^-1^1e-06count.cm**-2.s**-1phot.flux.density;em.gamma.softfloate_FluxUncertainty in Flux1e-06count.cm**-2.s**-1stat.errorfloatl_zLimit flag on zmeta.code.errorcharn_NameFurther notes on Namemeta.notecharJ/ApJS/135/155/table3Plausible EGRET IdentificationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRNameRadio name, as in table1.meta.id.crosscharNameRadio source name, based on 1950 positionmeta.id;meta.maincharf_Name[gh] Flag on Name (2)meta.code.errorcharNEDSimbad column added by the CDSmeta.refcharOmag? Optical magnitude from NEDmagphot.mag;em.opt.VfloatnullableRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainS4.85GHzFlux density at 4.85GHz from catalog of Becker et al., <VIII/13>mJyphot.flux.density;em.radio.3-6GHzintSp+Index? Radio spectral index (3)spect.indexfloatnullableProbThe a posteriori probability of a correct identification (eq. 4).stat.fit.goodnessfloatf_Prob[f] Flag on Prob (4)meta.code.errorcharMorphThe ``Morphological Type'' from NEDsrc.morph.typecharf_Morph[aA] Flag on Morph (5)meta.code.errorcharJ/ApJS/135/155/table1Complete EGRET Identification ResultsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint3EGThe J2000 3EG EGRET position namemeta.id;meta.maincharf_BName[aA] Flag on BName (1)meta.code.errorcharBName3EG Blazar identificationmeta.idcharn_BName[bde] Note on BName (2)meta.notecharRNamePosition name of potential radio counterpartmeta.id.crosscharprimaryf_RName[acfg] Flag on RName (3)meta.code.errorcharONameOther or common name for RNamemeta.idcharS4.85GHz? Flux density at 4.85GHz from catalog of Becker et al., <VIII/13>mJyphot.flux.density;em.radio.3-6GHzintnullableSp+Index? Radio spectral index (4)spect.indexfloatnullableR0? Characteristic angle (5)arcmininstr.offsetfloatnullableeta? Probability radio source is a {gamma}-ray source (see equ. 6)stat.fit.goodnessdoublenullableRad? Angle between the EGRET position estimate and the radio positionarcminpos.angDistancefloatnullableR95%? The 95% confidence contour radius in the direction of the radio sourcearcminphys.angSize;srcfloatnullablel_ContLimit flag on Contmeta.code.errorcharCont? EGRET position confidence contour at the radio position (6)%stat.fit.goodnessfloatnullableLR? Likelihood ratio (7)stat.likelihooddoublenullableProb? The a posteriori probability that the identification is correct as determined with equ. 4stat.fit.goodnessdoublenullableJ/ApJS/135/155/table4Elliptical fits to the 95% confidence position contours of all 3EG EGRET sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint3EGThe 3EG EGRET {gamma}-ray position namemeta.id;meta.maincharprimaryRAJ2000Right Ascension expressed in degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination expressed in degrees (J2000)degpos.eq.dec;meta.mainGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatMajAxisSemi-major axis lengtharcminphys.angSize;srcfloatMinAxisSemi-minor axis lengtharcminphys.angSize;srcfloatPAPosition angle of MajAxisdegpos.posAngintf_PAFlag on PA (1)meta.code.errorchar