J/MNRAS/323/757ivo://CDS.VizieR/J/MNRAS/323/757doi:10.26093/cds/vizier.73230757CDSLandt H.Padovani P.Perlman E.S.Giommi P.Bignall H.Tzioumis A.2024-06-27T20:17:19Z2005-04-19T16:43:27ZCDS support team

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

cds-question@unistra.frquasarsbl-lacertae-objectssurveysx-ray-sourcesradio-sourcesWe have searched the archived, pointed ROSAT Position Sensitive Proportional Counter data for blazars by correlating the WGACAT X-ray data base with several publicly available radio catalogues, restricting our candidate list to serendipitous X-ray sources with a flat radio spectrum ({alpha}_r_<=0.70, where S_{nu}_~{nu}^-{alpha}^). his makes up the Deep X-ray Radio Blazar Survey (DXRBS). Here we present new identifications and spectra for 106 sources, including 86 radio-loud quasars, 11 BL Lacertae objects, and nine narrow-line radio galaxies. Together with our previously published objects and already-known sources, our sample now contains 298 identified objects: 234 radio-loud quasars [181 flat-spectrum quasars: FSRQ ({alpha}_r_<=0.50) and 53 steep-spectrum quasars: SSRQ], 36 BL Lacs and 28 narrow-line radio galaxies. Redshift information is available for 96 per cent of these. Thus our selection technique is ~90 per cent efficient at finding radio-loud quasars and BL Lacs. Reaching 5-GHz radio fluxes ~50mJy and 0.1-2.0keV X-ray fluxes a few W10-14erg/cm^2^/s, DXRBS is the faintest and largest flat-spectrum radio sample with nearly complete (~85 per cent) identification.2001MNRAS.323..757Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/323/757CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/31 : The WGACAT version of ROSAT sources (White+ 2000)J/AJ/115/1253 : Deep X-Ray Radio Blazar Survey (DXRBS). I. (Perlman+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/323/757https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/323/757http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/323/757https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/323/757https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/323/757http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/323/757GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/323/757/blazars (Deep X-Ray Radio Blazar Survey (tables 4 and 5 of paper))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/323/757/blazars?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/323/757/blazars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/323/757/blazars?GETtext/xml+votable180.050000true2.640417-30.4538890.0055555555555555566/4255 4260 4695 5305 5870 6093 7220 7280 7492 7618 7860 7904 8511 8562 8716 8950 9146 9219 9636 10047 10216 10386 10529 10642 10710 11027 11037 11410 11508 11536 15260 16481 16483 16784 17551 17637 18640 18795 19617 22722 22979 23526 25245 25542 25630 25832 26089 26097 26100 26207 26866 26873 27133 27206 27520 27715 27718 27862 28471 28485 28495 28516 28538 28999 31243 31991 32686 33656 33755 33800 33823 34032 36059 36433 36672 36780 36956 36958 37474 39006 40795 42076 42609 42658 42670 43307 43503 43812 43830 43908 44226 44284 45564 46545 46696 47154 47319 47649 47672 47805 48595 48598 48926https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/323/757?format=asciiX-rayRadiodefaultJ/MNRAS/323/757/blazarsDeep X-Ray Radio Blazar Survey (tables 4 and 5 of paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.intRemIndicates a note exists (file notes.dat)char1WGAWGACAT designationcharprimaryRAJ2000WGACAT right ascension (J2000)pos.eq.ra;meta.mainDEJ2000WGACAT declination (J2000)pos.eq.dec;meta.mainW-PPSPC center offsetarcminfloatRArPNM or GB6 right ascension (J2000)pos.eq.raDErPNM or GB6 declination (J2000)pos.eq.decRAoOptical right ascension (J2000)pos.eq.raDEoOptical declination (J2000)pos.eq.decX-OOffset X minus Optical positionsarcsecfloate_X-Orms uncertainty on X-OarcsecfloatWGAdatDisplay the data from WGA Catalog (IX/31)charNote[*] *: Source does not meet strict DXRBS selection criteriacharCRROSAT count rate (1)ct/sfloatHRROSAT hardness ratio (ratio between hard (0.87-2.0keV) and medium (0.4-0.86keV) band count rates (1)floatF0.1-2keV0.1-2keV X-ray flux (1)mW.m**-2doubleF1keVX-ray flux at 1 keV (1)mJyfloatlogFX/FrRadio(6cm)-to-X-ray(0.3-3.65keV) flux ratio (1)floatF6cm? Radio flux at 6cmmJyintnullableSp+Index? radio spectral indexfloatnullableBjmag? B_j_ (blue) magnitude (from COSMOS)magfloatnullablel_OmagLimit flag on OmagcharOmag? O-plate (blue) magnitude (from APM)magfloatnullablel_EmagLimit flag on EmagcharEmag? E-plate (red) magnitude (from APM)magfloatnullableClassClassification (2)chare_z? rms uncertainty on zfloatnullableu_z[?] ?: unknown redshiftcharz? RedshiftfloatnullableJ/MNRAS/323/757/notesIndividual notesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.int1WGAWGACAT designationcharNoteText of the note