J/A+A/562/A64ivo://CDS.VizieR/J/A+A/562/A64doi:10.26093/cds/vizier.35620064CDSWu Z.Jiang D.Gu M.Chen L.2017-09-22T16:16:37Z2014-05-09T15:19:43ZCDS support team

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

cds-question@unistra.frbl-lacertae-objectsradio-sourcesredshiftedgamma-ray-astronomyBy cross-correlating an archival sample of 170 BL Lacs with a 2 year Fermi/LAT AGN sample, we have compiled a sample of 100 BL Lacs with Fermi detection (FBLs) and a sample of 70 non-Fermi BL Lacs (NFBLs). We compared various parameters of FBLs with those of NFBLs, including the redshift, the low-frequency radio luminosity at 408MHz (L_408MHz_), the absolute magnitude of host galaxies (M_host_), the polarization fraction from the NVSS survey (P_NVSS_), the observed arcsecond scale radio core flux at 5GHz (F_core_), and the jet Doppler factor. All these parameters are directly measured or derived from available data in the literature. We found that the Doppler factor is on average greater in FBLs than in NFBLs, and the Fermi {gamma}-ray detection rate is higher in sources with higher Doppler factor. In contrast, there are no significant differences in terms of the intrinsic parameters of redshift, L_408MHz_, M_host_, and P_NVSS_. FBLs seem to have a higher probability of exhibiting measurable proper motion.2014A&A...562A..64Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/562/A64CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/466/63 : VLBI observations of BL Lac objects (Wu+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/562/A64https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/562/A64http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/562/A64https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/562/A64https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/562/A64http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/562/A64GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/562/A64/table3 (Sample of 170 BL Lac objects in Wu et al. (2007, Cat. J/A+A/466/63))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/562/A64/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/562/A64/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/562/A64/table3?GETtext/xml+votable180.050000true1.5578869-6.39314860.0055555555555555566/342 579 615 790 975 2094 2273 2295 2340 2414 2549 2650 2708 2792 3023 3431 3710 4054 4260 4695 4770 4805 4964 5423 5483 5673 5723 5872 5918 6015 6018 6021 6038 6067 6507 6647 6764 6815 6996 7038 7176 7233 7235 7265 7296 7518 7548 7570 7576 7699 7871 7896 8067 8374 8556 8717 8751 8915 8945 8972 9049 9060 9196 9202 9383 9445 9554 9566 9570 9612 9615 9681 9684 9688 9711 9762 9773 9991 10071 10198 10422 10572 10605 10656 10715 10921 11153 11212 11253 11352 11374 11429-11430 11514 11639 11649 11682 11736 11795 11936 12218 12231 12599 13586 13673 13705 13820 13927 15027 15037 15059 15269 15286 15311 15495 15916 15969 16027 16059 16170 16272 16281 16298 17351 17516 17579 17820 18324 18388 18416 19088 19190 19271 19584 19831 20020 20054 20065 21968 21972 22363 22823 23011 23127 23134 23222 24027 26083 26360 26513 27722 28115 28138-28139 28388 28454 28492 28517 28542 31389 31663 31894 32261 32311 32345 326213.313034785154005e-24 3.313034785154005e-24https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/562/A64?format=asciiGamma-rayOpticalRadiodefaultJ/A+A/562/A64/table3Sample of 170 BL Lac objects in Wu et al. (2007, Cat. J/A+A/466/63)SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIAUIAU source name (HHMM+DDd, J2000)meta.idcharSourceSource namemeta.id;meta.maincharz[0.01/2.1] Redshiftsrc.redshiftfloatn_z[*] * for unknown redshift and taken as the average redshift of LBL/IBL/HBL subclassmeta.notecharlog(nu)[11/21] Synchrotron peak frequency (1)log(Hz)em.freq;stat.maxfloatlogP[22/29] Total radio power at 408MHz (1)log(W.Hz**-1)phys.luminosity;em.radio.400-750MHzfloatFcArcsecond scale radio flux at 5GHz F_core_ (1)Jyphot.flux.density;em.radio.3-6GHzfloatdelta[0.5/37.1] Doppler factor {delta} (1)spect.dopplerParamfloatPol[0/12]? Polarization fraction from NVSS%phys.polarizationfloatnullableMhost? Absolute magnitude of host galaxy (2)magphys.magAbsfloatnullableClassClass: FBL (BL Lac with Fermi detection) or NFBL (no Fermi detection)src.classcharFgam? Observed {gamma}-ray flux from 2nd year Fermi/LAT catalog [100MeV to 100GeV]mW.m**-2phot.flux.density;em.gamma.harddoublenullablebeta[0.5/26]? Proper motion from the literature (Apparent parsec-scale speed of the fastest jet feature ({beta}_app_)phys.veloc;arith.difffloatnullabler_beta? Reference for proper motion (3)meta.ref;pos.frameintnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main