J/AJ/133/303ivo://CDS.VizieR/J/AJ/133/303doi:10.26093/cds/vizier.51330303CDSCarini M.T.Noble J.C.Taylor R.Culler R.2017-12-22T05:32:42Z2009-02-09T10:58:11ZCDS support team

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

cds-question@unistra.frquasarsphotometryWe report the results of a study of optical microvariability in radio-quiet and radio-intermediate quasars. Observations were obtained on a total of seven objects: five radio-quiet quasars and two radio-intermediate quasars. No microvariability was detected in either the radio-quiet or radio-intermediate objects in our sample, despite intensive monitoring for several consecutive nights. In one object, PG 1257+346, evidence for interday variability was detected. We examined a sample of 117 radio-quiet objects found in the literature that have been studied for microvariability. This sample is discussed in terms of classification, redshift distribution, R (the ratio of the radio [5GHz] flux to the optical [4400{AA}] flux), optical magnitude, luminosity, and observing strategy.2007AJ....133..303Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/133/303CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/133/303https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/133/303http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/133/303https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/133/303https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/133/303http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/133/303GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/133/303/table1 (Radio-quiet and radio-intermediate quasars observed)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/133/303/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/133/303/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/133/303/table1?GETtext/xml+votable180.050000true15.2254172.1936110.005555555555555556Cone search capability for table J/AJ/133/303/table3 (Total sample of radio quiet galaxies observed)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/133/303/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/133/303/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/133/303/table3?GETtext/xml+votable180.050000true1.581337520.20291390.0055555555555555566/0 1405 2081 2631 4215 4262 4332 4345 4506 4821 5091 5215 5244 5264 5290 5291 5318 5481 5638 5671 5731 5780 5791 5825 6223 6591 6923 7176 7246 7713 8071 8282 8528 8555 8694 8941 9194 9457 9459 9716 9801 10039 10188 10385 10411 10414 10472 10578 10601 10659 10691 10694 10769 10807 10912 10927 10940 11217 11347 11354 11498 11581 11596 11723 11924 12197 12317 12380 12712 12773 16269 16665 17510 17746 17819 18042 18106 18127 18366 18918 19283 19433 19730 19746 19807 19883 19932 20058 22847 22890 24639 24739 25093 25965 26033 26223 26294 26323 26509 26859 27023 27025 27848 28086 28164 28356 28532 29795 34166 34171 34881 36771 46365 46408 46412 46418 48498https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/133/303?format=asciiOpticaldefaultJ/AJ/133/303/table1Radio-quiet and radio-intermediate quasars observedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameQuasar namemeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainzRedshiftsrc.redshiftfloatl_RLimit flag on Rmeta.code.errorcharR? R-value (ratio of the radio [5GHz] flux to the optical [4400{AA}] flux)phot.flux;arith.ratiofloatnullableBMAGAbsolute B magnitudemagphys.magAbs;em.opt.BfloatQcl[RQQ,RIQ] Radio-Quiet or Radio-Intermediate Quasarmeta.code.classcharSimbadNameSimbad column added by the CDSmeta.idcharNEDSimbad column added by the CDScharJ/AJ/133/303/table3Total sample of radio quiet galaxies observedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject namemeta.id;meta.maincharzRedshiftsrc.redshiftfloatClassObject classificationmeta.code.class;src.classcharf_RLimit flag on Rmeta.codecharR? The R value (ratio of the radio [5GHz] flux to the optical [4400{AA}] flux)phot.flux;arith.ratiofloatnullableMAG? Absolute magnitude in n_magmagphys.magAbsfloatnullablemagApparent magnitude in n_magmagphot.magfloatn_mag[bv] Observational bandinstr.bandpasscharVar[yn] Exhibits microvariability?meta.codecharNaTotal attempts to detect microvariabilitymeta.numberintRefReference(s), detailed in refs.dat filemeta.ref;pos.frame;meta.filecharDurDuration of the observation(s) (1)htime.intervalcharSimbadNameSimbad column added by the CDSmeta.idcharNEDSimbad column added by the CDSchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/AJ/133/303/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