J/ApJ/625/633ivo://CDS.VizieR/J/ApJ/625/633doi:10.26093/cds/vizier.16250633CDSDai X.Kochanek C.S.2017-06-21T08:22:13Z2006-05-27T13:49:06ZCDS support team

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

cds-question@unistra.frgravitational-lensingvisible-astronomysloan-photometryWe observed B1600+434 and B1608+656 with Chandra ACIS, detecting both quasar images in B1600+434 and three of four images in B1608+656. We also detected 157 serendipitous X-ray sources in the two Chandra fields and identified the brighter optical counterparts using the Sloan Digital Sky Survey and Palomar Digital Sky Survey.2005ApJ...625..633Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/625/633CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/625/633https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/625/633http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/625/633https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/625/633https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/625/633http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/625/633GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/625/633/xray (X-ray sources observed by Chandra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/625/633/xray?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/625/633/xray?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/625/633/xray?GETtext/xml+votable180.050000true240.0937643.25600190.0055555555555555566/9831 9837 11665 116672.85864675833786e-19 3.5010283109654867e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/625/633?format=asciiOpticaldefaultJ/ApJ/625/633/xrayX-ray sources observed by ChandrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCXOChandra identificationmeta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.maine_RAdegError in RAdegarcsecstat.errorfloate_DEdegError in DEdegarcsecstat.errorfloatNCtsNet countsctphot.count;em.X-rayinte_NCtsUncertainty in NCtsctstat.errorintS/NSignal-to-noise ratiostat.snrfloatORAdeg? Optical counterpart Right Ascension in decimal degrees (J2000)degpos.eq.radoublenullableODEdeg? Optical counterpart Declination in decimal degrees (J2000)degpos.eq.decdoublenullableD(O-X)? Angular distance between X-ray source and optical counterpartarcsecfloatnullabler'mag? SDSS r' band magnitude (Cat. <II/259>)magphot.mag;em.opt.RfloatnullableTSimbad column added by the CDSmeta.idcharSDSSView the SDSS detailsmeta.ref.urlchar