J/ApJ/822/109ivo://CDS.VizieR/J/ApJ/822/109doi:10.26093/cds/vizier.18220109CDSAsmus D.Honig S.F.Gandhi P.2018-05-14T12:32:38Z2018-02-20T06:40:37ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiseyfert-galaxiesinfrared-sourcesgalaxy-classification-systemsRecent mid-infrared (MIR) interferometric observations have shown that in a few active galactic nuclei (AGNs) the bulk of the infrared emission originates from the polar region above the putative torus, where only a little dust should be present. Here, we investigate whether such strong polar dust emission is common in AGNs. Out of 149 Seyferts in the MIR atlas of local AGNs, 21 show extended MIR emission on single-dish images. In 18 objects, the extended MIR emission aligns with the position angle (PA) of the system axis, established by [O III], radio, polarization, and maser-based PA measurements. The relative amount of resolved MIR emission is at least 40% and scales with the [O IV] fluxes, implying a strong connection between the extended continuum and [O IV] emitters. These results together with the radio-quiet nature of the Seyferts support the scenario that the bulk of MIR emission is emitted by dust in the polar region and not by the torus, which would demand a new paradigm for the infrared emission structure in AGNs. The current low detection rate of polar dust in the AGNs of the MIR atlas is explained by the lack of sufficient high-quality MIR data and the requirements on the orientation, strength of narrow-line region, and distance of the AGNs. The James Webb Space Telescope will enable much deeper nuclear MIR studies with comparable angular resolution, allowing us to resolve the polar emission and surroundings in most of the nearby AGNs.2016ApJ...822..109Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/822/109CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/133/77 : VLA radio continuum survey of Seyfert galaxies (Ho+, 2001)J/ApJ/705/14 : Seyfert galaxies in the mid-IR (Deo+, 2009)J/ApJ/725/2270 : Mid-IR emission lines in AGNs (Pereira-Santaella+, 2010)J/ApJS/208/24 : Spitzer MIR AGN survey. I. (Lacy+, 2013)J/MNRAS/439/1648 : Subarcsecond mid-infrared atlas of local AGN (Asmus+, 2014)J/MNRAS/454/766 : Mid-infrared-X-ray correlation for local AGNs (Asmus+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/822/109https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/822/109http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/822/109https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/822/109https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/822/109http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/822/109GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/822/109/table1 (Properties of the Seyfert Sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/822/109/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/822/109/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/822/109/table1?GETtext/xml+votable180.050000true66.5029792-57.20047060.0055555555555555566/1701 4116 4439 5091 5975 7659 7869 7959 8299 8675 8922 10265 10364 10454 10475 10912 10925 10927 10977 11027 12241 12380 13707 14744 14858 16301 16690 16712 17075 17525 17727 17748 17754 17795 17814 17819 17850 18365 18484 18524 18683 18838 19283 19376 19433 19619 19730 19746 19932 20000 20489 21016 21036 21450 22654 22890 22912 23167 23323 23469 24842 25035 25182 25610 25790 25907 26148 26292 26393 26547 27191 27382 27699 27721 27767 27945 28075 28259 28535 29795 30140 31352 33034 33716 33930 33958 34099 34104 34294 34412 34531 34534 34737 34881 34913 35246 35447 35623 36005 36158 36668 36765 36786 36861 36896 37650 38268 38479 38653 38704 38868 38948 39182 39487 39836 40221 40410 40818 41586 41982 42016 42027 43262 43339 43625 43634 43677 43748 43806 43877 43925 44507 44551 44650 44660 45587 45735 45779 45883 46615 46715 46987 47047 47107 47120 47154 47169 47415 49042https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/822/109?format=asciiInfraredOpticaldefaultJ/ApJ/822/109/table1Properties of the Seyfert SampleSimbadNameSimbad column added by the CDSmeta.idcharl_logF[<= ] Limit flag on logFmeta.code.errorcharNameSeyfert galaxy namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDist[3.8/807] DistanceMpcpos.distance;pos.heliocentricfloatClassOptical Seyfert classification (1)src.classcharExt[npuy] Nuclear MIR extension from Asmus et al. (2014, J/MNRAS/439/1648) (2)meta.code.classcharRatio[0.01/2.59]? Ratio of relative extended to nuclear emission at 12{mu}m (R_nuc_^ext^=F_{nu}_^Gau^/F_{nu}_^PSF^-1)phot.flux;arith.ratiofloatnullablePA-MIR[1/210] Mean nuclear MIR position angle from the individual images from Asmus et al. (2014, J/MNRAS/439/1648) (3)degpos.posAng;stat.meaninte_PA-MIR[3/89]? Uncertainty in PA-MIR (4)degstat.errorintnullablePA-NLR[-17/215]? Position angle of the narrow-line region (NLR) major axis, mostly from [O III] imagesdegpos.posAngintnullabler_PA-NLRReference for PA-NLR (see refs.dat file)meta.ref;pos.framecharPA-Rad[-20/245]? Position angle of the nuclear radio morphologydegpos.posAngintnullabler_PA-RadReference for PA-Rad (see refs.dat file)meta.ref;pos.framecharPA-Pol[-45/150]? Position angle of polarized broad linesdegpos.posAngintnullabler_PA-Pol? Reference for PA-Pol (see refs.dat file)meta.ref;pos.frameintnullablePA-Mas[-34/155]? Maser position angledegpos.posAngintnullabler_PA-MasReference for PA-Mas (see refs.dat file)meta.ref;pos.framecharPA-SA[-41/245]? Mean system axis position angledegpos.posAng;stat.meanintnullablee_PA-SA[1/53]? Uncertainty in PA-SA (if multiple PAs are used) (4)degstat.errorintnullablePA-Host[-60/290]? Host inner structure position angledegpos.posAngintnullabler_PA-Host? Reference for PA-Host (see refs.dat file)meta.ref;pos.frameintnullablelogF[-14.52/-10.72]? The [O IV] 25.89{mu}m line flux (in erg/s/cm^2^)0.001W.m**-2phot.flux;em.IR.15-30um;spect.linefloatnullabler_logF? Reference for logF (see refs.dat file)meta.ref;pos.frameintnullablePapIDisplay data from Asmus et al. (2014, Cat. J/MNRAS/439/1648)meta.ref.urlchar_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/ApJ/822/109/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRef[1/133] Reference codemeta.noteintAutAuthor's name(s)meta.bib.authorcharBibCodeBibCodemeta.bib.bibcodecharComComment on referencemeta.notechar