Binary quasars in the SDSS J/AJ/131/1 ivo://CDS.VizieR/J/AJ/131/1 doi:10.26093/cds/vizier.51310001 CDS Hennawi J.F. Strauss M.A. Oguri M. Inada N. Richards G.T. Pindor B.,Schneider D.P. Becker R.H. Gregg M.D. Hall P.B. Johnston D.E. Fan X.,Burles S. Schlegel D.J. Gunn J.E. Lupton R.H. Bahcall N.A.,Brunner R.J. Brinkmann J. 2017-06-20T13:16:44Z 2009-04-11T14:03:14Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr quasars visible-astronomy sloan-photometry We present a sample of 221 new quasar pairs with proper transverse separations R_prop_<1h^1^Mpc over the redshift range 0.5<z<3.0, discovered from an extensive follow-up campaign to find companions around the Sloan Digital Sky Survey (Cat. <VII/243>) and 2dF QSO Redshift Survey (Cat. <VII/241>) quasars. This sample includes 26 new binary quasars with separations R_prop_<50h^-1^kpc ({thetas}<10"), more than doubling the number of such systems known. We define a statistical sample of binaries selected with homogeneous criteria and compute its selection function, taking into account sources of incompleteness. The first measurement of the quasar correlation function on scales 10h^-1^kpc<R_prop_<400h^-1^kpc is presented. 2006AJ....131....1H https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/131/1 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to VII/241 : The 2dF QSO Redshift Survey (Croom+ 2004) VII/243 : SDSS quasar catalog. III. (Schneider+, 2005) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/131/1 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/131/1 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/131/1 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/131/1 https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/131/1 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/131/1 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/AJ/131/1/binqso (Binary or projected pairs of qyasars, or quasar-star pairs) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/131/1/binqso? https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/131/1/binqso? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/131/1/binqso? GET text/xml+votable 180.0 50000 true 12.0032083 -10.8635 0.005555555555555556 5/4442 4457 4506 6398 6741 6/0 2 2207 4104 4126 4143 4148 4150 4158 4171 4175 4179 4195 4203 4225 4229 4761 4781 4783 4815 4819 4840 4843 4848 4973 5008 5009 5014 5016 5018 5022 5027 5029 5051 5060 5063 5076 5099 5308 5372 5439 5468 5481 5487 5539 5582 5590 5624 5660 5663 5675 5678 5687 5714 5736 5740 5750 5755 5760 5766 5796 5798 5819 5833 5834 5844 5855 5900 5907 5937 5939 5944 5958 5983 6004 6029 6063 6066 6068 6085 6120 6122 6127 6128 6132 6133 6135 6136 6163 6172 6212 6217 6243 6250 6254 6359 6385 6400 6409 6411 6434 6441 6449 6461 6465 6483 6486 6489 6509 6557 6572 6573 6578 6597 6605 6612 7187 7210 7223 7225 7234 7241 7245 7248 7259 7262 7263 7275 7297 7363 7377 7380 7424 7447 7458 7465 7466 7468 7479 7480 7488 7496 7503 7520 7522 7540 8201 8203 8205 8227 9044 9047 9053 9074 9168 9211 9222 9223 9243 9300 9378 9396 9412 9446 9458 9468 9472 9480 9483 9514 9632 9729 9731 9738 9739 9821 9831 9836 9914 9917 9956 9969 9973 9978 10063 10085 10183 10189 10215 10220 10221 10555 10569 10575 10581 10584 10642 10698 10712 10719 10721 10724 10742 10743 10938 10995 11025 11042 11064 11117 11137 11188 11193 11206 11228 11229 11249 11277 11282 11309 11317 11323 11328 11335 11341 11357 11363 11426 11438 11461 11465 11467 11498 11788 11802 11803 11804 11814 11829 11832 11844 11853 11905 11907 11913 11914 11916 11945 12397 12401 12408 16893 17229 17233 17301 17305 17317 17405 17407 17493 17503 17520 17554 17563 17577 17663 17664 17665 17667 17727 17741 17742 17743 17745 17746 17749 17750 17751 17753 17754 17756 17757 17758 17765 17766 17767 17772 17773 17774 17806 17807 17811 17814 17815 17816 17817 17819 17820 17822 17827 17832 17833 17834 17836 17837 17838 17840 17841 17998 18002 18003 18004 18009 18010 18012 18022 18032 18067 18071 18072 18076 18083 18084 18087 18088 18091 18092 18093 18112 18303 18403 18406 18408 18416 18532 18586 18588 18607 18625 18685 18686 18766 18767 18772 18773 18776 18780 18781 18782 18786 18787 18789 18791 18796 18798 18800 18802 18837 18841 18849 18852 18861 18862 18880 18947 19007 19023 19026 19028 19032 19034 19035 19036 19043 19045 19046 19052 19085 19087 19089 19096 19109 19112 19138 19202 19382 19387 19388 19412 19424 19426 19456 19692 19735 19843 19992 20005 21853 22003 22005 22927 22950 22962 23103 23104 23144 23145 23181 23185 23187 23189 23190 23191 23192 23193 23195 23196 23201 23203 23204 23205 23207 23216 23217 23234 25566 25583 25589 25591 25596 25598 25599 25849 25852 25911 25915 25916 25918 25927 25929 25933 25934 25935 25947 25953 25957 25958 25960 25961 25968 25970 25972 25973 25986 25995 25996 25997 25998 26016 26018 26025 26028 26029 26030 26035 26036 26055 26063 26165 26166 26169 26170 26179 26182 26183 26187 26189 26201 26202 26203 26204 26209 26210 26211 26212 26213 26215 26220 26225 26227 26228 26229 26236 26245 26248 26250 26252 26253 26256 26258 26262 26269 26271 26273 26276 26277 26279 26280 26281 26283 26284 26286 26289 26290 26291 26295 26304 26306 26312 26313 26316 26328 26338 26340 26353 26369 26370 26373 26376 26404 26412 26414 26485 26489 26555 26863 26869 26874 26876 26877 26911 26927 26933 26939 26942 26943 26950 26955 26962 26972 26975 26977 26978 26981 26982 26987 26990 26991 26995 27002 27005 27011 27013 27015 27019 27021 27023 27025 27027 27029 27031 27035 27036 27037 27040 27043 27045 27048 27053 27055 27056 27057 27073 27075 27083 27101 27104 27118 27205 27206 27209 27214 27216 27218 27219 27229 27241 27244 27245 27251 27257 27260 27281 27287 27288 27305 27307 27309 27320 27331 27345 27348 27359 27362 27363 27375 27392 27393 27394 27396 27398 27410 27427 27431 27434 27447 27472 27544 27612 27648 27652 27654 27682 27685 27722 27755 27790 27792 27807 27846 27872 27880 27936 30033 30036 30037 30038 30040 30041 30064 31331 31334 31342 31397 31399 31431 31456 31464 32415 32497 32682 36725 36788 36816 49007 49015 49022 49104 49149 49151 2.040811542443644e-19 6.090060298487514e-19 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/131/1?format=ascii Optical default J/AJ/131/1/binqso Binary or projected pairs of qyasars, or quasar-star pairs recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int n_Name1 Simbad column added by the CDS meta.id;meta.dataset char Name1 Quasar A name (1) meta.id;meta.main char Name2 Quasar B name (1) meta.id.assoc char z1 Quasar A redshift src.redshift float z2 ? Quasar B redshift src.redshift float nullable theta Angular separation arcsec pos.angDistance float dV ? Velocity of quasar B relative to A km/s phys.veloc;arith.diff int nullable r ? Transverse proper separation in h^-1^kpc kpc pos.pm float nullable chi2 Color similarity statistic value stat.fit.chi2 float RA1 Hour of Quasar A Right Ascension (J2000) pos.eq.ra;meta.main DE1 Degree of Quasar A Declination (J2000) pos.eq.dec;meta.main umag1 The Quasar A SDSS u band PSF magnitude (2) mag phot.mag;em.opt.U float gmag1 The Quasar A SDSS g band PSF magnitude (2) mag phot.mag;em.opt.B float rmag1 The Quasar A SDSS r band PSF magnitude (2) mag phot.mag;em.opt.R float imag1 The Quasar A SDSS i band PSF magnitude (2) mag phot.mag;em.opt.I float zmag1 The Quasar A SDSS z band PSF magnitude (2) mag phot.mag;em.opt.I float RA2 Hour of Quasar B Right Ascension (J2000) pos.eq.ra DE2 Degree of Quasar B Declination (J2000) pos.eq.dec umag2 The Quasar B SDSS u band PSF magnitude (2) mag phot.mag;em.opt.U float gmag2 The Quasar B SDSS g band PSF magnitude (2) mag phot.mag;em.opt.B float rmag2 The Quasar B SDSS r band PSF magnitude (2) mag phot.mag;em.opt.R float imag2 The Quasar B SDSS i band PSF magnitude (2) mag phot.mag;em.opt.I float zmag2 The Quasar B SDSS z band PSF magnitude (2) mag phot.mag;em.opt.I float Sample Selection algorithm used to find the binary meta.note SDSS Simbad column added by the CDS meta.ref.url char