J/AJ/135/2453ivo://CDS.VizieR/J/AJ/135/2453doi:10.26093/cds/vizier.51352453CDSPlotkin R.M.Anderson S.F.Hall P.B.Margon B.Voges W.,Schneider D.P.Stinson G.York D.G.2017-10-13T15:41:26Z2011-02-08T14:11:17ZCDS support team

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

cds-question@unistra.frbl-lacertae-objectsvisible-astronomysloan-photometryradio-sourcesWe present a large sample of 501 radio-selected BL Lac candidates from a combination of Sloan Digital Sky Survey (SDSS) Data Release 5 optical spectroscopy and the Faint Images of the Radio Sky at 20cm (FIRST) radio survey; this is one of the largest BL Lac samples yet assembled, and each object emerges with homogeneous data coverage. Each candidate is detected in the radio from FIRST and confirmed in SDSS optical spectroscopy to have (1) no emission feature with measured rest-equivalent width larger than 5{AA} and (2) no measured CaII H/K depression larger than 40%. We subdivide our sample into 426 higher-confidence candidates and 75 lower-confidence candidates.2008AJ....135.2453Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/135/2453CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/71 : The FIRST Survey Catalog, Version 03Apr11 (Becker+ 2003)II/276 : The SDSS Photometric Catalog, Release 5 (Adelman-McCarthy+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/135/2453https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/135/2453http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/135/2453https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/135/2453https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/135/2453http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/135/2453GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/135/2453/BLLac (Observed (table5) and derived (table6) parameters of BL Lac candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/135/2453/BLLac?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/135/2453/BLLac?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/135/2453/BLLac?GETtext/xml+votable180.050000true0.4885-10.521480.0055555555555555566/4096 4098 4104 4134 4141 4146 4160 4167 4168 4169 4172 4190 4200 4210 4211 4229 4231 4353 4604 4606 4741 4795 4801 4805 4817 4824 4840 4841 4855 4861 4862 4863 4892 4902 4914 4923 4925 4931 4960 4963 4964 4971 4974 4977 4999 5037 5053 5072 5091 5098 5107 5231 5233 5242 5284 5311 5349 5361 5370 5405 5412 5413 5423 5432 5455 5462 5483 5510 5516 5522 5523 5536 5546 5553 5569 5614 5645 5657 5676 5677 5687 5698 5703 5722 5723 5776 5784 5792 5796 5800 5844 5872 5881 5887 5918 5939 5960 5990 6015 6018 6021 6022 6027 6067 6088 6096 6103 6110 6116 6132 6212 6242 6246 6255 6258 6340 6352 6386 6404 6406 6409 6413 6427 6436 6464 6465 6499 6502 6507 6515 6527 6528 6534 6540 6554 6568 6574 6577 6619 6629 6636 6647 7176 7233 7235 7257 7262 7265 7269 7285 7296 7302 7315 7319 7343 7368 7369 7380 7433 7448 7457 7475 7478 7553 8195 8203 8321 8374 8378 8521 8565 8657 8915 8917 9143 9165 9196 9202 9223 9230 9264 9301 9310 9327 9334 9344 9361 9383 9405 9410 9440 9445 9452 9455 9472 9600 9601 9615 9618 9637 9762 9773 9811 9823 9855 9859 9860 9879 9888 9950 9960 9984 9985 9991 9996 10016 10061 10092 10105 10154 10180 10202 10262 10389 10510 10512 10514 10524 10526 10537 10540 10553 10572 10575 10585 10592 10605 10612 10615 10623 10625 10627 10656 10669 10700 10710 10715 10725 10748 10749 10766 10810 10829 10836 10843 10852 10867 10896 10910 10912 10921 10938 10947 10949 10980 10994 11004 11012 11038 11064 11071 11077 11092 11100 11101 11124 11143 11153 11160 11168 11174 11178 11195 11209 11212 11242 11246 11253 11254 11268 11290 11321 11323 11324 11327 11352 11373 11374 11385 11396 11415 11430 11444 11449 11450 11456 11467 11476 11493 11514 11778 11795 11798 11832 11912 17213 17264 17516 17574 17579 17602 17755 17772 17820 17999 18020 18070 18090 18096 18604 18687 18772 18840 18852 18853 18854 18950 19007 19033 19034 19042 19045 21853 21855 21879 21972 23208 25565 25582 25849 25855 25910 25934 25940 25954 26016 26036 26056 26073 26074 26083 26087 26100 26203 26228 26242 26247 26254 26256 26270 26276 26277 26305 26308 26310 26322 26335 26341 26406 26483 26550 26563 26565 26569 26571 26595 26964 26983 26986 26994 26998 27003 27032 27036 27045 27056 27060 27063 27076 27082 27198 27245 27246 27247 27249 27251 27257 27311 27319 27321 27329 27353 27366 27380 27389 27405 27420 27428 27442 27447 27466 27472 27500 27524 27531 27554 27560 27573 27591 27603 27622 27653 27669 27671 27675 27698 27763 27797 27805 27845 27846 27885 27945 28199 28225 28542 28595 28599 28605 28618 28619 28629 28641 28647 28662 28664 28669 31354 31358 31535 31656 31698 32399 32442 32447 32511 36779 36784 36801 49007 49019 490209.276497240453405e-25 3.96733927701321e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/135/2453?format=asciiOpticalRadiodefaultJ/AJ/135/2453/BLLacObserved (table5) and derived (table6) parameters of BL Lac candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS Name (HHMMSS.ss+DDMMSS.s)meta.id;meta.maincharClass[BL? ] higher confidence BL Lac class (BL), or lower confidence BL Lac class (BL?)src.classcharN[NSO] Source in NED as BL Lac? (3)meta.codecharumagSDSS u-band psf magnitudemagphot.mag;em.opt.UfloatgmagSDSS g-band psf magnitudemagphot.mag;em.opt.BfloatrmagSDSS r-band psf magnitudemagphot.mag;em.opt.RfloatimagSDSS i-band psf magnitudemagphot.mag;em.opt.IfloatzmagSDSS z-band psf magnitudemagphot.mag;em.opt.Ifloatz? Redshift from SDSS spectroscopysrc.redshiftfloatnullableq_z[LRTU] z quality (4)meta.code.qual;src.redshiftcharC? Measured H/K break strength (5)spect.line.intensityfloatnullablef1.4Integrated FIRST 1.4GHz observed flux densitymJyphot.flux.density;em.radio.750-1500MHzfloatCommAdditional comments (6)meta.notecharSimbadNameSimbad column added by the CDSmeta.idcharNEDSimbad column added by the CDScharlogL5Calculated monochromatic radio luminosity at rest frame 5GHz in erg/s/Hz (log scale)log(1e-07W.Hz**-1)phys.luminosity;em.radio;meta.modelledfloatOmagExtinction corrected optical magnitude in filter closest to rest frame 500nmmagphot.mag;em.optfloatlogLoptCalculated monochromatic optical luminosity at rest frame 500nm (5000{AA}) (log scale)log(1e-07W.Hz**-1)phys.luminosityfloatX[Y/N] Source is a RASS X-ray source? (8)meta.codecharXrateRASS measured X-ray count rate (8)ct/sphot.count;em.X-rayfloatlogLxCalculated monochromatic X-ray luminosity at rest frame 1keV in erg/s/Hz (log scale) (8)log(1e-07W.Hz**-1)phys.luminosityfloatSI.ROBroad-band radio/optical spectral indexspect.indexfloatSI.OXBroad-band optical/X-ray spectral indexspect.indexfloatSI.RXBroad-band radio/X-ray spectral indexspect.indexfloatDR5Details of the photometry from the SDSS-DR5meta.ref.urlcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.main