J/AJ/126/2125ivo://CDS.VizieR/J/AJ/126/2125doi:10.26093/cds/vizier.51262125CDSZakamska N.L.Strauss M.A.Krolik J.H.Collinge M.J.Hall P.B.Hao L.,Heckman T.M.Ivezic Z.Richards G.T.Schlegel D.J.Schneider D.P.,Strateva I.Vanden Berk D.E.Anderson S.F.Brinkmann J.2023-04-06T16:50:58Z2005-04-29T21:09:57ZCDS support team

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

cds-question@unistra.frquasarsvisible-astronomysloan-photometryspectroscopyType II quasars are the long-sought luminous analogs of type 2 (narrow emission line) Seyfert galaxies, suggested by unification models of active galactic nuclei (AGNs) and postulated to account for an appreciable fraction of the cosmic hard X-ray background. We present a sample of 291 type II AGNs at redshifts 0.3<z<0.83 from the spectroscopic data of the Sloan Digital Sky Survey. These objects have narrow (FWHM<2000km/s), high equivalent width emission lines with high-ionization line ratios. We describe the selection procedure and discuss the optical properties of the sample. About 50% of the objects have [O III] {lambda}5008 line luminosities in the range 3x10^8^-10^10^L_{sun}_, comparable to those of luminous (-27<M_B_<-23) quasars; this, along with other evidence, suggests that the objects in the luminous subsample are type II quasars.2003AJ....126.2125Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/126/2125CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/123/567 : SDSS quasar catalog, I: Early Data Release (Schneider+, 2002)J/AJ/126/2579 : SDSS quasar catalog. II. First data release (Schneider+, 2003)J/AJ/128/1002 : SDSS candidate type II quasars. II (Zakamska+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/126/2125https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/126/2125http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/126/2125https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/126/2125https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/126/2125http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/126/2125GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/126/2125/table1 (SDSS Type II AGNs at Redshifts 0.3<z<0.83)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/126/2125/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/126/2125/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/126/2125/table1?GETtext/xml+votable180.050000true6.3810833-10.67283330.0055555555555555566/0 553 4097 4102 4106 4109 4114 5099 5747 5755 5806 5819 5877-5878 5962 6015 6046 6072 6115 6123 6129 6215 6252 6341 6352 6355 6357 6403 6430 6440 6444 6461-6462 6470 6476 6518 6527 6539-6540 6542-6543 6547 6556 6559 6561-6562 6593 6610 6626 7183-7184 7201 7207 7229 7243 7262 7284-7285 7300 7360 7434-7435 7456 7467 7477 7479 7522 8198 8230 9439 9512 9605 9632 9965 10075 10087 10202 11147 11224 11239 11333 11344 11354 11363 11369 11456 11471 11498 11507 11816 11851 11936 11948 12556 17229 17406-17407 17492 17497 17509 17575 17725-17726 17747 17750 17753 17755-17756 17763 17767-17768 17770-17774 17776 17806 17816 17826-17827 17830-17831 17834 17836 17857 18001 18006-18009 18019 18022 18024 18028-18029 18068 18072 18075 18112 18390 18520 18537 18541 18685-18686 18750-18751 18772-18773 18790 18792 18829-18831 18839 18844 18853 18860 19028 19050 19052 19111 19994 21845 21847 21855 23103 23182 23186 23190 23193 23196 23198 23201-23202 23204-23205 23207-23208 23212 23214 23216 23218 23234 25596 25845 25847 25851 25910-25911 25916 25946 25949-25950 25953 25960 25969 25971 25973 25979 26018 26021 26024 26058 26188 26246 26267 26285 26292-26293 26302 26310 27045-27046 27058 27083 27220 27242 27246 27249 27255 27260 27290 27293 27302 27304 27311 27313 27315 27332 27337 27346 27392 27426 27681 31295 31333 31338 31374 31422 31425 32508 32682 36723 36792 36812 36862 450472.040811542443644e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/126/2125?format=asciiOpticaldefaultJ/AJ/126/2125/table1SDSS Type II AGNs at Redshifts 0.3<z<0.83recnoRecord number assigned by the VizieR team. Should Not be used for identification.intSDSSThe SDSS name (1)charDR1[0/1] Availability in Data Release 1 (1 = Yes, 0 = No)intzRedshift based on [O II] (3728) emission linefloatTCodeThe seven-digit target code (2)charu*magSDSS u*-band PSF magnitudemagfloate_u*magError in u*magmagfloatg*magSDSS g*-band PSF magnitudemagfloate_g*magError in g*magmagfloatr*magSDSS r*-band PSF magnitudemagfloate_r*magError in r*magmagfloati*magSDSS i*-band PSF magnitudemagfloate_i*magError in i*magmagfloatz*magSDSS z*-band PSF magnitudemagfloate_z*magError in z*magmagfloatEW[OII]Equivalent width of [O II] (3728)nmfloatEW[OIII]Equivalent width of [O III] (5008)nmfloatL[OII]Log of [O II] (3728) luminositylog(solLum)floatL[OIII]Log of [O III] (5008) luminositylog(solLum)floatFluxThe FIRST 20cm flux (3)mJyfloatCom[0/1] Asymmetric lines (1 = Yes, 0 = No)int_RAPosition (from SDSS name) (right ascension part)degpos.eq.ra;meta.main_DEPosition (from SDSS name) (declination part)degpos.eq.dec;meta.main