J/A+A/356/445ivo://CDS.VizieR/J/A+A/356/445doi:10.26093/cds/vizier.33560445CDSBrinkmann W.Laurent-Muehleisen S.A.Voges W.Siebert J.Becker R.H.,Brotherton M.S.White R.L.Gregg M.D.2000-05-13T19:23:06Z2000-05-13T19:21:37ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleix-ray-sourcesradio-sourcesWe present the results of a correlation of the ROSAT All-Sky Survey with the April 1997 release of the VLA 20cm FIRST (Cat. <VIII/59>) catalogue. We focus our analysis on the 843 X-ray sources which have unique radio counterparts. The majority of these objects (84%) have optical counterparts on the POSS 1 plates. Approximately 30% have been previously classified and we obtain new spectroscopic classifications for 85 sources by comparison with the ongoing FIRST Bright Quasar Survey and 106 additional sources from our own new spectroscopic data. Approximately 51% of the sources are presently classified, and the majority of the unclassified objects are optically faint. The newly classified sources are generally radio weak, exhibiting properties intermediate with previous samples of radio- and X-ray-selected AGN. This also holds for the subsample of 71 BL Lacs which includes many intermediate objects. The 146 quasars show no evidence for a bimodal distribution in their radio-loudness parameter, indicating that the supposed division between radio-quiet and radio-loud AGN may not be real. The X-ray and radio luminosities are correlated over two decades in radio luminosity, spanning the radio-loud and radio-quiet regimes, with radio-quiet quasars showing a linear correlation between the two luminosities. Many of the sources show peculiar or unusual properties which call for more detailed follow-up observations. We also give the X-ray and radio data for the 518 X-ray sources for which more than one radio object is found. Because of the difficulties inherent in identifying optical counterparts to these complex sources, we do not consider these data in the current analysis.2000A&A...356..445Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/356/445CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)VIII/59 : the FIRST Survey, version 1999Jul (White+ 1999)J/A+AS/110/469 : AGN from the RASS (Bade+, 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/356/445https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/356/445http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/356/445https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/356/445https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/356/445http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/356/445GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/356/445/table1 (ROSAT sources with single FIRST matches)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/356/445/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/356/445/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/356/445/table1?GETtext/xml+votable180.050000true0.5125-10.51069440.005555555555555556Cone search capability for table J/A+A/356/445/table2 (ROSAT sources with multiple FIRST matches)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/356/445/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/356/445/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/356/445/table2?GETtext/xml+votable180.050000true0.9379583-11.14022220.0055555555555555565/1139 1370 2366 2374 2403 2442 2616 2637 4379 4451 4501 7116 7119 6/1 4471 4473 4475-4477 4535 4540 4542 4555 4562 4566 4568 4572 4575 4582 4587 4589 4596 4602 4606-4607 4795 4798 4820 4826-4827 4830-4831 4836 4852 4854 4860 4862-4863 4882 4887 4905 4908 4924 4928 4930 4942 4949 4951 4953 4959-4961 4964 4969 4974 4984 4990 4992 4997 4999 5001 5015-5017 5023 5028-5029 5048-5049 5059 5061 5066 5070 5072 5074 5081 5085 5091 5100 5102-5103 5106 5108 5111-5112 5119 5138-5139 5142 5145 5153-5154 5156 5163 5167 5171 5179-5181 5191 5193-5194 5200 5208 5212-5213 5216 5224 5227 5233-5234 5239 5250-5252 5264 5270-5271 5274 5279 5289 5292 5296 5302 5305 5310-5313 5317 5319 5325 5327 5329 5332-5333 5338 5349 5351 5353 5359 5361 5367 5370 5373-5374 5387 5392-5393 5396 5398 5412 5415 5423 5425 5428-5429 5437-5439 5443 5447-5448 5462 5466 5473 5476-5477 5505-5507 5510 5513 5516 5518 5522-5523 5527-5529 5536 5544 5546 5633 5635 5647 5649 5657-5658 5668 5670 5672 5674 5676 5684-5685 5687 5689 5692-5693 5698 5703-5704 5706 5711 5717 5721-5723 5735 5764 5767 5769 5771 5773-5774 5776 5778 5783 5795 5798 5800-5801 6161 6163-6164 6167 6179 6181 6192 6202 6204 6211-6212 6219 6232 6234 6241-6242 6250 6252 6261 6264 6266-6268 6270 6293 6295 6300 6336-6338 6356 6359 6406-6407 6410 6413 6427 6433-6434 6436-6437 6442-6443 6457-6458 6466 6471 6476-6477 6479 6486 6496 6498-6499 6502 6505 6507 6529-6530 6532 6534-6535 6548-6549 6551-6553 6555-6556 6564-6565 8575 8659 8661 8665 8669 8678 8694 8823 8830 8887 8893-8895 8906-8907 8909 8911 8914-8915 8917-8919 8921-8922 8924 8926-8927 8929-8932 8934 8937 8939 8941 8943 8945-8946 8948 8952 8954-8955 8969 8972 8982 9002 9004-9005 9009 9013 9018 9021-9022 9031 9037-9038 9047-9050 9052 9060 9062 9065 9067 9069-9071 9076 9078 9082-9083 9087 9089 9091-9092 9095 9098-9099 9104 9108 9112 9115 9117-9120 9124 9129 9131 9134-9135 9138 9140-9141 9144-9146 9151 9154-9155 9158 9161-9162 9164 9166-9168 9172 9175 9180-9181 9185 9187-9188 9191 9194 9196 9201 9203 9209-9210 9213 9215 9229 9231 9236 9238 9240 9242 9244-9245 9248 9250 9252 9260-9262 9264 9268 9272-9273 9284-9285 9287 9290 9301 9304-9306 9310-9311 9314 9316 9327-9329 9333 9335 9338 9344 9346 9350 9352-9353 9355 9359 9361 9363 9366 9368 9372 9376 9381 9383-9384 9393 9397-9398 9401-9402 9406-9407 9410 9418 9422 9430 9433-9437 9441-9443 9445 9447 9452-9453 9455-9457 9459 9461-9463 9468 9470-9473 9476-9477 9479 9481-9483 9485 9490 9502-9506 9508-9510 9513 9515-9516 9519-9520 9523-9524 9528 9530-9531 9534 9544 9546 9568 9570 9573 9578 9580 9601 9604-9605 9607 9611 9620 9629 9632-9633 9637 9641-9642 9664-9666 9672 9732-9733 9739 9743 9750 9753-9754 9761-9762 9772-9773 9778 9790 9794-9796 9799 9801 9805 9809 9811-9813 9815 9818 9820-9821 9831 9860 9872 9876-9877 9885-9886 9888 9891-9892 9894 9900-9901 9984 10247 10255 10257-10258 10265 10271 10276 10280 10284 10288 10303 10307 10312 10314 10316-10318 10322-10323 10325 10328 10330-10332 10337 10343-10344 10347 10352 10355 10358 10369 10378-10381 10383 10389-10390 10393 10397 10400-10401 10405 10408 10411-10412 10416 10420 10422 10427 10432 10435 10440 10442 10444-10446 10450-10451 10454-10456 10461 10470 10472 10474-10476 10481 10483 10485 10488 10490-10491 10500-10501 10510-10514 10516 10522 10524 10526 10545 10553 10556-10557 10561 10564 10566 10569-10570 10572 10574-10575 10581-10582 10585 10587 10592 10594-10595 10597-10599 10602 10605 10608 10627 10629-10631 10634 10637-10639 10649-10650 10656 10659-10660 10662 10664-10666 10688 10753-10756 10758 10760-10761 10764 10766-10767 10769 10771 10779-10780 10786-10788 10791 10793 10795 10798 10800-10801 10805 10810-10812 10815 10817-10818 10820 10823 10825-10828 10832 10836-10837 10841 10843 10852 10854 10856 10881 10886 10888 10893 10895 10898 10900 10905-10906 10912 10915 10919 10921 11264 16894 17213 17234 17237-17238 17243 17253 17265 17314 17322 17399 17471 17492 17497 17499-17500 17509 17512 17515 17523 17525 17551 17563 17574-17575 17579 17600 17602 17653 17655 17668 17672 17676 17690 17703 17712 17715 17718 17721 17727 17750 17754-17756 17763 17797 17808 17810 17814 17817 17819-17820 17825 17828 17832 17836 17856 17979-17980 17983 17989-17990 17993-17994 18001-18003 18008-18009 18016 18019 18022 18025 18033-18034 18063 18065-18067 18072 18074 18077-18079 18082 18084 18092 18094 18096-18097 18112 18114-18115 18120 18177 18179 18511 18517 18519-18520 18524-18525 18532 18624 18627 18683 18685 18749 18764 18766 18769 18775-18776 18778-18779 18794 18797 18823 18840 18853 18951 18999 19003-19004 19015 19021-19022 19032 19034 19042 19044 19047 19052-19053 19079 19084 19089 19095 19097 19099-19101 19124 19144 19202 19456 23178 23208-23210 23213 28023 28025 28031 28103 28110 28113 28115 28117 28120 28127-28129 28131-28132 28134 28138-28139 28151 28154 28158 28283 28287 28343 28347 28359 28364 28368-28369 28378 28397 28399-28402 28406 28413 28421 28423 28425 28429-28430 28432-28433 28443 28445-28447 28449-28451 28454 28458-28459 28461 28463 28469-28471 28475 28481 28486 28490 28492 28494-28496 28498 28501-28503 28513 28516-28517 28519 28524 28526-28527 28529-28530 28532 28534 28536 28538 28540 28542 28545-28546 28552 28555 28561 28564 28571 28575 28579 28582-28584 28586 28589 28593-28595 28603 28609 28616-28618 28622 28625 28629 28632 28636 28641-28643 28647 28657 32444-32445 32463 32474-32475 32480 32483 32485-32486 32497 32500 32507 32511 32680 32682-32683 32686-32687 36775 36777-36779 36782 36784-36786 36790 49009 49015 49019 49091 49101 49104https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/356/445?format=asciiX-rayRadiodefaultJ/A+A/356/445/table1ROSAT sources with single FIRST matchesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intFIRSTfind the FIRST original datacharRXSX-ray source ROSAT All Sky Survey designationcharRAJ2000FIRST source right ascension (J2000)DEJ2000FIRST source declination (J2000)dRXDistance between radio and X-ray sourcearcsecintNameCommon name for source obtained from NED, truncated to the first 14 characters.charTypeType of the object (G1)charr_TypeReference for classification (2)charz? RedshiftfloatnullableFrFIRST 1.4 GHz peak fluxmJyfloatFxX-ray flux in the 0.1-2.4 keV energy range1e-15W.m**-2floate_Fxrms uncertainty on Fx1e-15W.m**-2floatGamma? Power-law photon index of X-ray source (3)floatnullableE_Gamma? Error in Gamma (upper limit)floatnullablee_Gamma? Error in Gamma (lower limit)floatnullableEmag? E-magnitude of the optical counterpart (from APM)magfloatnullableEType? Value for the classification of the optical object in E-band (3)intnullableOmag? O-magnitude of the optical counterpart (from APM)magfloatnullableOtype? Value for the classification of the optical object in O-band (4)intnullableA(E)? Extinction correction (5)magfloatnullabledRO? Angular distance between radio and optical positionarcsecfloatnullableJ/A+A/356/445/table2ROSAT sources with multiple FIRST matchesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intFIRSTfind the FIRST original datacharRXSX-ray source ROSAT All Sky Survey designationcharFxX-ray flux in the 0.1-2.4 keV energy range1e-15W.m**-2floate_Fxrms uncertainty on Fx1e-15W.m**-2floatTypeType of the object (G1)charl_zLimit flag on zcharz? Redshiftdoublenullablez2? Second estimated redshiftdoublenullablen_z2[?) ] Uncertainty flag on z2chardRXDistance between radio and X-ray sourcearcsecintRAJ2000FIRST source right ascension (J2000)DEJ2000FIRST source declination (J2000)FrFIRST 1.4 GHz peak fluxmJydouble