J/A+A/414/487ivo://CDS.VizieR/J/A+A/414/487doi:10.26093/cds/vizier.34140487CDSVeron-Cetty M.-P.Balayan S.K.Mickaelian A.M.Mujica R.Chavushyan V.,Hakopian S.A.Engels D.Veron P.Zickgraf F.-J.Voges W.Xu D.-W.2009-02-17T11:14:54Z2009-02-17T12:10:16ZCDS support team

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

cds-question@unistra.frquasarsactive-galactic-nucleix-ray-sourcesphotometryredshiftedTo build a large, optically bright, X-ray selected AGN sample we have correlated the ROSAT-FSC (<IX/29>) catalogue of X-ray sources with the USNO (<I/252>) catalogue limited to objects brighter than O=16.5 and then with the APS (<VII/214>) database. Each of the 3212 coincidences was classified using the slitless Hamburg spectra. 493 objects were found to be extended and 2719 starlike. Using both the extended objects and the galaxies known from published catalogues we built up a sample of 185 galaxies with O(APS)<17.0mag, which are high-probability counterparts of RASS-FSC X-ray sources. 130 galaxies have a redshift from the literature and for another 34 we obtained new spectra. The fraction of Seyfert galaxies in this sample is 20%. To select a corresponding sample of 144 high-probability counterparts among the starlike sources we searched for very blue objects in an APS-based color-magnitude diagram. Forty-one were already known AGN and for another 91 objects we obtained new spectra, yielding 42 new AGN, increasing their number in the sample to 83. This confirms that surveys of bright QSOs are still significantly incomplete. On the other hand we find that, at a flux limit of 0.02ct/s and at this magnitude, only 40% of all QSOs are detected by ROSAT.2004A&A...414..487Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/414/487CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/29 : ROSAT All-Sky Survey Faint Source Catalog (Voges+ 2000)I/252 : The USNO-A2.0 Catalogue (Monet+ 1998)VII/214 : APS Galaxies in the North Galactic Pole (Cabanela, 1999)J/A+AS/115/235 : The Hamburg/ESO survey for bright QSOs. II. (Reimers+, 1996)J/A+A/358/77 : Hamburg/ESO survey for bright QSOs. III. (Wisotzki+, 2000)J/A+AS/128/507 : The Hamburg Quasar Survey. II. (Engels+ 1998)J/A+AS/134/483 : The Hamburg Quasar Survey. III. (Hagen+ 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/414/487https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/414/487http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/414/487https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/414/487https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/414/487http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/414/487GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/414/487/table2 (List of the 185 galaxy candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/414/487/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/414/487/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/414/487/table2?GETtext/xml+votable180.050000true3.531083310.57036110.005555555555555556Cone search capability for table J/A+A/414/487/table3 (List of the 76 known AGN brighter than O(USNO)=16.5, located within 35" of a ROSAT-FSC source)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/414/487/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/414/487/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/414/487/table3?GETtext/xml+votable180.050000true1.596166712.59811110.005555555555555556Cone search capability for table J/A+A/414/487/table4 (List of 103 QSO candidates identified with a ROSAT-FSC source and located in zone IVa.)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/414/487/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/414/487/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/414/487/table4?GETtext/xml+votable180.050000true2.831083328.29744440.0055555555555555566/34 51 59 225 235 386 2048 2067 2081 2153 2198 2206 2210 2214 4114 4185 4212 4340 4367 4400 4407 4410 4491 4510-4511 4519 4540-4541 4572 4584 4733 4825 4929 4974 4990 4996 5061 5200 5204 5283 5338 5360 5392 5429 5476 5515 5576 5594 5623 5629 5665 5701 5752 5777 5821 5841 5897 5907 5933 5963 5975 6051 6068 6098 6506 6999 7182 7210 7225 7234 7242-7243 7245 7263 7266 7269 7318 7332 7385 7398 7424 7464 7485 7557 7655 7711 7797 7957 7981 7987 7990 8028 8085 8209 8216 8230 8288 8294 8315 8317 8352 8452 8469 8486 8515 8526 8533 8552 8556 8691 8717 8726 8742 8751 8847 8867 8869 8881 8886 8895 8927 8933 8955 9018 9021 9064 9072-9073 9112 9116 9161 9199 9231 9239 9260 9356 9358 9368 9434 9457 9462 9468 9471 9477 9482 9507 9520 9523 9551 9640-9641 9736 9746 9753 9777 9793 9812 9848 9913 9923 9932 9994-9995 10039 10052 10055 10076 10125 10161 10181-10182 10193 10217 10269 10298 10343 10364 10396-10397 10454 10501 10548 10553 10637 10659 10666 10732 10796 10813 10826 10865 10867 10953 10968 10994 11027 11029 11119 11186 11191 11222 11240 11312 11341 11382 11407 11467 11536 11543 11552 11568 11579 11586 11596 11630 11686 11723 11758 11778 11790 11813 11845 11854 11935 12030 12033 12069 12183 12197-12198 12211 12231 12251 18027 18096 18157 18173 18207 18809 18894 18918 18935 19204 19210 19228 19261 19285 19307 19319 19321 19449 19513 19564-19565 19581 19601 19619 19655 19740 19743 19807 19836 19860 19971 20116 20144 20183 20320 20325 23127 23268 23465 25958 26034 26039 26102 26234 26270 26379 26417 26426 26437 26509 26520 26581 26594 26609 27060 27084 27087 27230 27239 27309 27314 27333 27349 27387 27495 27718 27728 27736 27771 27813 27828 27929 27935 27964 28015 28035 28039 28075 28123 28142 28168 28201 28218 28230 28252 28254-28255 28286 28326 28371 28443 28459 28462 28489 28494-28495 28518 28524 28529 28532 28546 28593 28609 28618 28632 28643 28647 28661 31388 31440 31465 31534 31550 31586 31622 31658 31679 31686 31723 32422 32433 32475 32698https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/414/487?format=asciiX-rayOpticaldefaultJ/A+A/414/487/table2List of the 185 galaxy candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Optical right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Optical declination (J2000)pos.eq.dec;meta.mainSepSeparation between the ROSAT and USNO positionsarcsecpos;arith.difffloatXcrX-ray count ratect/sphot.count;em.X-rayfloatlogLX? 0.1-2.4keV X-ray luminositylog(1e-07W)phys.luminosity;em.X-rayfloatnullableO(USNO)? USNO O magnitudemagphot.mag;em.opt.BfloatnullableO(APS)? APS O magnitudemagphot.mag;em.opt.Bfloatnullablez? Redshiftsrc.redshiftfloatnullableClassClassificiation (1)meta.code.classcharObs[1,2 ] Observations code (2)meta.code;obscharNameNamemeta.idcharJ/A+A/414/487/table3List of the 76 known AGN brighter than O(USNO)=16.5, located within 35" of a ROSAT-FSC sourcerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000USNO right ascension (J2000)pos.eq.ra;meta.mainDEJ2000USNO declination (J2000)pos.eq.dec;meta.mainSepSeparation between the ROSAT and USNO positionsarcsecpos.angDistancefloatXcrX-ray count ratect/sphot.count;em.X-rayfloatO(USNO)? USNO O magnitudemagphot.mag;em.opt.BfloatnullableO(APS)? APS O magnitudemagphot.mag;em.opt.BfloatnullableO-E? APS O-E colour indexmagphot.color;em.opt.B;em.opt.Rfloatnullablez? Redshiftsrc.redshiftfloatnullableOMAG? Absolute magnitude, computed by using the O(USNO) magnitude (H0=50km/s/Mpc)magphys.magAbsfloatnullableTypeClassificiation (1)src.classcharObs[1/2]? Observations code, in table4.dat only (2)meta.code;obsintnullableNameNamemeta.idcharJ/A+A/414/487/table4List of 103 QSO candidates identified with a ROSAT-FSC source and located in zone IVa.NameNamemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000USNO right ascension (J2000)pos.eq.ra;meta.mainDEJ2000USNO declination (J2000)pos.eq.dec;meta.mainSepSeparation between the ROSAT and USNO positionsarcsecpos.angDistancefloatXcrX-ray count ratect/sphot.count;em.X-rayfloatO(USNO)? USNO O magnitudemagphot.mag;em.opt.BfloatnullableO(APS)? APS O magnitudemagphot.mag;em.opt.BfloatnullableO-E? APS O-E colour indexmagphot.color;em.opt.B;em.opt.Rfloatnullablez? Redshiftsrc.redshiftfloatnullableOMAG? Absolute magnitude, computed by using the O(USNO) magnitude (H0=50km/s/Mpc)magphys.magAbsfloatnullableTypeClassificiation (1)src.classcharObs[1/2]? Observations code, in table4.dat only (2)meta.code;obsintnullable