J/A+A/472/699ivo://CDS.VizieR/J/A+A/472/699doi:10.26093/cds/vizier.34720699CDSTurriziani S.Cavazzuti E.Giommi P.2017-10-13T15:41:40Z2007-11-11T15:44:53ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleibl-lacertae-objectsquasarsAlthough Blazars are a small fraction of the overall AGN population they are expected to be the dominant population of extragalactic sources in the hard X-ray and gamma-ray bands and have been shown to be the largest contaminant of CMB fluctuation maps. So far the number of known blazars is of the order of several hundreds, but the forthcoming AGILE, GLAST and Planck space observatories will detect several thousand of objects of this type. In preparation for these missions it is necessary to identify new samples of blazars to study their multi-frequency characteristics and statistical properties. We compiled a sample of objects with blazar-like properties via a cross-correlation between large radio (NVSS, ATCAPMN) and X-ray surveys (RASS) using the SDSS-DR4 and 2dF survey data to spectroscopically identify our candidates and test the validity of the selection method. We present the Radio-Optical-X-ray catalog built at ASDC (ROXA), a list of 816 objects among which 510 are confirmed blazars. Only 19% of the candidates turned out to be certainly non-blazars demonstrating the high efficiency of our selection method. Our catalog includes 173 new blazar identifications, or about 10% of all presently known blazars. The relatively high flux threshold in the X-ray energy band (given by the RASS survey) preferentially selects objects with high FX/Fr ratio leading to the discovery of new High Energy Peaked BL Lac (HBLs).Our catalog therefore includes many new potential targets for GeV-TeV observations.2007A&A...472..699Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/472/699CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)IX/29 : ROSAT All-Sky Survey Faint Source Catalog (Voges+ 2000)IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)II/276 : The SDSS Photometric Catalog, Release 5 (Adelman-McCarthy + 2007)VII/226 : The 2dF Galaxy Redshift Survey 100k Data Release (2dFGRS Team, 2001)VII/241 : The 2dF QSO Redshift Survey (Croom+ 2004)ATCAPMN : http://www.atnf.csiro.au/resources/catalogues/pmn_atcahttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/472/699https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/472/699http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/472/699https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/472/699https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/472/699http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/472/699GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/472/699/catalog (ROXA catalog of blazars.)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/472/699/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/472/699/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/472/699/catalog?GETtext/xml+votable180.050000true0.38666714.9355560.0055555555555555566/4096 4098 4141 4143 4146 4160 4179 4189-4190 4194 4210 4229 4231 4748 4792 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10980 10986-10987 10992 11002 11004 11012 11015 11017 11022 11027 11033 11043 11045-11046 11049 11052-11053 11087 11091 11094 11098-11100 11104 11116 11118 11124 11126 11143 11153 11160 11162 11165 11172 11180 11183 11187 11197-11198 11203 11209 11212 11216 11229 11242 11253 11260 11274 11276 11286 11311-11312 11321 11334 11352 11374 11388-11389 11396 11401-11402 11406-11407 11415 11419 11426 11430 11444 11449 11456 11460 11475 11490-11491 11512 11586-11587 11589 11598 11608 11778 11787 11795 11800 11805 11813 11825 11832 11839 11876 11911-11912 11918-11919 11936 11941 12391 12547 16434 16440 16443-16444 16447 16458 16471 16475 16478 16491 16496 16534 16536 16580 16584 16609 16642 16649 16924 17213 17219 17238 17471 17495 17501 17512 17516 17551 17558 17574 17579 17663 17820 18004-18006 18022 18070 18089 18092 18385 18402 18517 18627 18769 18778 18951 19034 19042 19101 19327 19405 19411 19418 19696 19700 19756-19757 19762 19776 19840 19983 20005 20016 21879 21968 21972 23208 23210 25582 25593 25599 25849 25855 25907 25911 25924 25932 25947-25948 25956 25964 25977 25989-25991 26010 26027 26035-26036 26038 26053 26073 26083 26090 26100 26198 26203 26228-26229 26242 26245 26248 26259 26277-26278 26282 26292 26301 26321-26322 26325 26335 26340 26344 26352 26360 26382 26390 26404 26406 26454 26483 26499 26520 26563 26568 26592 26595 26867 26910 26934 26939 26949 26959-26960 26964 26966 26974-26975 26978 26983 26986 27021 27029 27034 27046 27053 27076 27082 27113 27129 27230 27238 27243 27246 27248 27253 27263 27310 27322 27324 27329 27386 27390 27394 27428 27450 27473 27486 27561 27599 27653 27657 27659 27670 27681 27689 27692 27722 27726 27749-27750 27793 27796-27797 27815-27816 27823 27838 27846 27909 28167 28199 28208 28225 28534 28540 28575 28589 28603 28616 30036 30039 30042 31399 31424 31430 31472 32431 32442 32497 32674 32682 34798 35315 35550 35640 35680 35696 35719 35730 35735-35736 35739 35752 35757-35758 35764 35816 35884 35902 35942 35944 35970 35976 35998 36003 36010 36012 36033 36362 36387 36779 46918 46924 46932 46948 46950-46951 46994 47001 47004-47005 47008 47016-47017 47021 47025 47053 47065 48386 48589 49019 49099 491513.588997330618193e-19 4.653515163505597e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/472/699?format=asciiOpticaldefaultJ/A+A/472/699/catalogROXA catalog of blazars.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintROXASource name (JHHMMSS.s+DDMMSS.s)meta.id;meta.maincharzRedshiftsrc.redshiftfloatBjmag? Bj magnitude (from 2dF surveys)magphot.mag;em.opt.Bfloatnullableg'mag? g' magnitude (from SDSS survey)magphot.mag;em.opt.BfloatnullableF1.4GHz? Radio flux at 1.4GHz (NVSS)mJyphot.flux.density;em.radio.750-1500MHzfloatnullableF5GHz? Radio flux at 5GHz (North6cm, GB6 and PMN)mJyphot.flux.density;em.radio.3-6GHzfloatnullableFXX-ray Flux (RASS)mW.m**-2phot.flux;em.X-raydoubleFX/FrRatio between X-ray flux and radio fluxmW.m**-2.Jy**-1phot.flux;arith.ratiodoubleLXX-ray Luminosity1e-07Wphys.luminosity;em.X-raydoubleLrRadio Luminosity1e-07W.Hz**-1phys.luminosity;em.radiodoubleCaH+K? Calcium Breakspect.indexfloatnullableClassClassification (1)meta.code.classcharn_Class[*@z] Note on Class (2)meta.notecharSDSSshow the SDSS data (from SDSS data-base)meta.ref.urlchar_RASimbad column added by the CDSdegpos.eq.ra;meta.main_DESimbad column added by the CDSdegpos.eq.dec;meta.main