J/ApJ/569/23ivo://CDS.VizieR/J/ApJ/569/23doi:10.26093/cds/vizier.15690023CDSSmith P.S.Schmidt G.D.Hines D.C.Cutri R.M.Nelson B.O.2003-05-03T21:09:27Z2003-05-03T21:09:18ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiquasarspolarimetryinfrared-photometryOptical broadband polarimetry is presented for near-infrared color-selected active galactic nuclei (AGNs) classified as quasi-stellar objects (QSOs) based on their Ks-band luminosity. More than 10% of a sample of 70 QSOs discovered in the Two Micron All Sky Survey (2MASS, Cat. <B/2mass>) with J-Ks>2 and M_Ks_<-23 show high broadband linear polarization (P>3%), and values range to a maximum of P~11%. High polarization tends to be associated with the most luminous objects at Ks and with QSOs having the highest near-IR to optical flux ratios. The 2MASS QSO sample includes objects possessing a wide range of optical spectral types. High polarization is seen in two of 22 broad emission-line (type 1) objects, but ~1/4 of the QSOs of intermediate spectral type (type 1.5-1.9) are highly polarized. None of the nine QSOs classified as type 2 exhibit P>3%.2002ApJ...569...23Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/569/23CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/2mass : The 2MASS database (IPAC/UMass, 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/569/23https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/569/23http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/569/23https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/569/23https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/569/23http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/569/23GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/569/23/table1 (Optical polarimetry of 2MASS Red QSOs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/569/23/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/569/23/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/569/23/table1?GETtext/xml+votable180.050000true1.76515.9063890.005555555555555556Cone search capability for table J/ApJ/569/23/table2 (Optical polarimetry of other AGN found by 2MASS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/569/23/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/569/23/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/569/23/table2?GETtext/xml+votable180.050000true10.3237515.8580560.005555555555555556Cone search capability for table J/ApJ/569/23/table3 (Galactic interstellar polarization detected in the fields of 2MASS AGNs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/569/23/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/569/23/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/569/23/table3?GETtext/xml+votable180.050000true10.35666728.2619440.0055555555555555566/183 222 236 269 270 397 429 530 580 647 725 2178 2184 2216 4298 4346 4380 4405 4443 4469 4472 4492 4495 4536 4545 5333 5636 6511 6593 8420 8590 8597 8612 8635 8636 8644 8697 8791 8826 8889 8943 8962 8973 9019 9223 9246 10329 12630 12631 19319 19419 19637 19672 19678 19688 19741 19748 19761 19762 19765 19804 19830 19864 19945 19959 19966 19999 20015 20051 20137 20190 20204 20218 20388 26572 27593 27976 28031 28113 32408 32413 32436 32489 32499 32508https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/569/23?format=asciiInfrareddefaultJ/ApJ/569/23/table1Optical polarimetry of 2MASS Red QSOs2MASSIThe 2MASSI object namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintz? Redshift from Cutri et al. (2001, ASP Conf. Ser. 232, 78)src.redshiftfloatnullableSpTypeSpectral classification (1)src.classcharKmagThe K_s_ band magnitude (2)magphot.mag;em.IR.KfloatJ-KsThe (J-K_s_) color (2)magphot.color;em.IR.J;em.IR.Kfloatl_B-KsLimit flag on B-Kmeta.code.errorcharB-KsThe (B-K_s_) color (2)magphot.color;em.opt.B;em.IR.KfloatKMag? The absolute K_s_ band magnitudemagphys.magAbs;em.optfloatnullableObs? UT year of the observationtime.epochnullablef_Pol[a] a indicates that the polarization data is an average of the previous observationsmeta.code.errorcharPolDegree of linear polarization (3)%phys.polarizationfloate_PolThe 1{sigma} error on Polar%stat.errorfloattheta? Polarization position angledegpos.posAngfloatnullablee_theta? The 1{sigma} error on thetadegstat.errorfloatnullableCommComments (4)meta.notechar_RARight ascension (derived from 2MASSI) for Eq=J2000degpos.eq.ra;meta.main_DEDeclination (derived from 2MASSI) for Eq=J2000degpos.eq.dec;meta.mainJ/ApJ/569/23/table2Optical polarimetry of other AGN found by 2MASS2MASSIThe 2MASSI object namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintz? Redshift from Cutri et al. (2001, ASP Conf. Ser. 232, 78)src.redshiftfloatnullableSpTypeSpectral classification (1)src.classcharKmagThe K_s_ band magnitude (2)magphot.mag;em.IR.KfloatJ-KsThe (J-K_s_) color (2)magphot.color;em.IR.J;em.IR.Kfloatl_B-KsLimit flag on B-Kmeta.code.errorcharB-KsThe (B-K_s_) color (2)magphot.color;em.opt.B;em.IR.KfloatKMag? The absolute K_s_ band magnitudemagphys.magAbs;em.optfloatnullableObs? UT year of the observationtime.epochnullablef_Pol[a] a indicates that the polarization data is an average of the previous observationsmeta.code.errorcharPolDegree of linear polarization (3)%phys.polarizationfloate_PolThe 1{sigma} error on Polar%stat.errorfloattheta? Polarization position angledegpos.posAngfloatnullablee_theta? The 1{sigma} error on thetadegstat.errorfloatnullableCommComments (4)meta.notechar_RARight ascension (derived from 2MASSI) for Eq=J2000degpos.eq.ra;meta.main_DEDeclination (derived from 2MASSI) for Eq=J2000degpos.eq.dec;meta.mainJ/ApJ/569/23/table3Galactic interstellar polarization detected in the fields of 2MASS AGNsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASSIThe 2MASSI object namemeta.id;meta.maincharObjectThe object namemeta.id.assoccharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainPolPolarisation percentage%phys.polarizationfloate_Polrms uncertainty on Pol%stat.errorfloatthetaPolarization angledegpos.posAng;phys.polarizationfloate_thetarms uncertainty on thetadegstat.errorfloat