J/A+A/466/63ivo://CDS.VizieR/J/A+A/466/63doi:10.26093/cds/vizier.34660063CDSWu Z.Jiang D.R.Gu M.Liu Y.2017-12-15T10:56:02Z2008-01-22T10:56:40ZCDS support team

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

cds-question@unistra.frbl-lacertae-objectsradio-sourcesredshiftedWe present EVN observations of seven BL Lac objects selected from the RGB sample. To investigate the intrinsic radiation property of BL Lac objects, we estimated the Doppler factor with the VLA or MERLIN core and the total 408MHz luminosity for a sample of 170 BL Lac objects. The intrinsic (comoving) synchrotron peak frequency was then calculated by using the estimated Doppler factor. Assuming a Lorentz factor of 5, the viewing angle of jets was constrained. The high-resolution VLBI images of seven sources all show a core-jet structure. We estimated the proper motions of three sources with the VLBI archive data, and find that the apparent speed increases with the distance of components to the core for all of them.2007A&A...466...63Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/466/63CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/445/441 : SED of BL Lacertae objects (Nieppola+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/466/63https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/466/63http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/466/63https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/466/63https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/466/63http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/466/63GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/466/63/table4 (The sample of 170 BL Lac objects selected from Nieppola et al. (2006, Cat. <J/A+A/445/441>).)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/466/63/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/466/63/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/466/63/table4?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 27723 28115 28138-28139 28388 28454 28492 28517 28542 31389 31663 31894 32261 32311 32345 32621https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/466/63?format=asciiOpticalRadiodefaultJ/A+A/466/63/table4The sample of 170 BL Lac objects selected from Nieppola et al. (2006, Cat. <J/A+A/445/441>).recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIAUIAU name (HHMM+DDd)meta.idcharSourceSource namemeta.id;meta.maincharzRedshiftsrc.redshiftfloatn_z[*] * for unknown redshift and taken as the average redshift of LBL/IBL/HBL subclassmeta.notecharlog(nu)Intrinsic synchrotron peak frequency after excluding the Doppler factor, log(nu'peak)log(Hz)em.freqfloatSimbadNameSimbad column added by the CDSmeta.idchar_RAComputed Right Ascension for Equinox: J2000degpos.eq.ra;meta.main_DEComputed Declination for Equinox: J2000degpos.eq.dec;meta.mainlogPTotal radio power at 408MHzlog(W.Hz**-1)phys.luminosity;em.radio.400-750MHzfloatn_logP[abcde] Frequency used to derive logP (1)meta.notecharlogPc5GHz core luminositylog(W.Hz**-1)phys.luminosity;em.radio.3-6GHzfloatFExt? 5GHz extended flux densitymJyphot.flux.density;em.radio.3-6GHzfloatnullablen_FExt[f] f: extend flux at 1.4GHzmeta.notecharRefsReferences for core and extended flux in refs.dat filemeta.ref;pos.framechardeltaDoppler factorspect.dopplerParamfloattheta3Viewing angle of {GAMMA}=3degsrc.orbital.inclinationfloattheta5Viewing angle of {GAMMA}=5degsrc.orbital.inclinationfloattheta10Viewing angle of {GAMMA}=10degsrc.orbital.inclinationfloatJ/A+A/466/63/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notechar