J/A+A/401/927ivo://CDS.VizieR/J/A+A/401/927doi:10.26093/cds/vizier.34010927CDSBeckmann V.Engels D.Bade N.Wucknitz O.2006-07-01T22:51:20Z2006-07-01T22:47:47ZCDS support team

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

cds-question@unistra.frbl-lacertae-objectsx-ray-sourcesThe unification of X-ray and radio selected BL Lacs has been an outstanding problem in the blazar research in the past years. Recent investigations have shown that the gap between the two classes can be filled with intermediate objects and that apparently all differences can be explained by mutual shifts of the peak frequencies of the synchrotron and inverse Compton component of the emission. We study the consequences of this scheme using a new sample of X-ray selected BL Lac objects comprising 104 objects with z<0.9 and a mean redshift of 0.34. 77 BL Lacs, of which the redshift could be determined for 64 (83%) objects, form a complete sample.2003A&A...401..927Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/401/927CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)Table 2: Spectroscopic follow-up observation runs.Notes: a: Morning and evening hours of three nights.b: Number of objects observed in this observation runhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/401/927https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/401/927http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/401/927https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/401/927https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/401/927http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/401/927GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/401/927/table8 (Objects from the RASS-BSC/NVSS correlation. An X-ray count rate limit hcps>=0.09 was applied.)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/401/927/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/401/927/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/401/927/table8?GETtext/xml+votable180.050000true106.112563.3155560.005555555555555556Cone search capability for table J/A+A/401/927/table9 (The HRX-BL Lac sample (Hamburg-RASS Bright X-ray AGN sample))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/401/927/table9?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/401/927/table9?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/401/927/table9?GETtext/xml+votable180.050000true107.62541759.1388890.0055555555555555566/4160 4472 4540 4589 4964 4974 4992 5016 5049 5194 5227 5250 5267 5305 5311-5312 5359 5367 5373 5412 5423 5438 5483 5514 5516 5522 5536 5579 5597 5687 5721-5723 5743 5746 5767 5778 5800 5844 5872 5895 5975 5988 6002 6018-6019 6021 6025 6034 6067 6088 6092 6122 6264 6295 6324 6337 6391 6436 6466 6477 6515 6527 6582-6583 6599 6611 6628-6629 6647 6724 6920 6951 6977 6999 7004 7034 7038 7176 7233 7246 7265 7354 7410 7484 7518 7548 7553 7561 7606 7641-7642 7656 7659 7662 7684 7699 7728 7756 7799 7814-7815 7896 7969 7987 7989 8008 8017 8033 8066-8067 8071 8134 8143 8145 8556 8627 8641 8665 8669 8823 8906 8915 8919 8922 8926 8945 8963 8969 8972 9013 9018 9047 9049 9052 9099 9104 9144 9168 9181 9194 9196 9750 9762 9872 10241 10265 10271 10312 10358 10389 10416 10442 10455 10475 10481 10514 10526-10527 10572 10594 10605 10630 10656 10669 10691 10717 10761 10766 10788 10800 10805 10856 10900 10927 10949-10950 11064 11091 11104 11111 11126 11160 11212 11253 11312 11319 11321 11352 11378 11388 11402 11408 11430 11444 11449 11514-11515 11658 11682 11778-11779 11798 11816 11876 11936 12038 12178 12231 27063 28060 28083 28115 28138-28139 28199 28271 28275 28277-28278 28343 28352 28356 28430 28432 28454 28477 28492 28498 28502 28517 28527 28534 28538 28571 28589 28603 28637 28654 28663https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/401/927?format=asciiX-raydefaultJ/A+A/401/927/table8Objects from the RASS-BSC/NVSS correlation. An X-ray count rate limit hcps>=0.09 was applied.ClassClassificiationsrc.classcharz? Redshiftsrc.redshiftdoublenullablen_z[*C] Note on Redshift (1)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainSourceNamemeta.id;meta.maincharn_Class[*C] Note on Class (1)meta.notecharJ/A+A/401/927/table9The HRX-BL Lac sample (Hamburg-RASS Bright X-ray AGN sample)z? Redshiftsrc.redshiftfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName (1)meta.id;meta.maincharn_Name[*] Note on Name (1)meta.notecharNew[new ] new: new identificationmeta.notecharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainu_z[?] ?: uncertain redshiftsmeta.code.error;src.redshiftcharFXROSAT PSPC (0.5-2.0keV) flux in 10^-12^erg/cm^2^/s1e-15W.m**-2phot.flux;em.X-rayfloatF1.4GHzRadio flux at 1.4GHzmJyphot.flux.density;em.radio.750-1500MHzfloatBmagB magnitudemagphot.mag;em.opt.Bfloatn_Bmag[1] 1: B magnitudes determined with the Calar Alto 1.23m telescopemeta.notecharKmag? K magnitudemagphot.mag;em.IR.KfloatnullableCaBreak? CA break index percentage (2)%phot.flux;arith.ratiointnullable