J/A+A/654/A93ivo://CDS.VizieR/J/A+A/654/A93doi:10.26093/cds/vizier.36540093CDSBuat V.Mountrichas G.Yang G.Boquien M.Roehlly Y.Burgarella D.,Stalevski M.Ciesla L.Theule P.2023-09-04T13:56:44Z2021-10-18T12:19:26ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiinterstellar-mediumextinctionWe study a sample of 1275 broad-line AGN in the XMM-XXL field, with optical to infrared photometric data. These AGN are seen along their polar direction and we expect a maximal impact of dust located around the poles when it is present. We use X-CIGALE, which introduces a dust component to account for obscuration along the polar directions, modeled as a foreground screen, and an extinction curve that is chosen as it steepens significantly at short wavelengths or is much grayer. By comparing the results of different fits, we are able to define subsamples of sources with positive statistical evidence in favor of or against polar obscuration (if present) and described using the gray or steep extinction curve. We find a similar fraction of sources with positive evidence for and against polar dust. Applying statistical corrections, we estimate that half of our sample could contain polar dust and among them, 60% exhibit a steep extinction curve and 40% a flat extinction curve; although these latter percentages are found to depend on the adopted extinction curves. The obscuration in the V-band is not found to correlate with the X-ray column density, while A_V_/N_H_ ratios span a large range of values and higher dust temperatures are found with the flat, rather than with the steep extinction curve. Ignoring this polar dust component in the fit of the spectral energy distribution of these composite systems leads to an overestimation of the stellar contribution. A single fit with a polar dust component described with an SMC extinction curve efficiently overcomes this issue but it fails at identifying all the AGN with polar dust obscuration.2021A&A...654A..93Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/654/A93CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/457/110 : Northern XMM-XXL field AGN catalog (Menzel+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/654/A93https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/654/A93http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/654/A93https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/654/A93https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/654/A93http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/654/A93GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/654/A93/tablea1 (Properties derived for each of the 1212 sources with good XCIGALE fits)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/654/A93/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/654/A93/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/654/A93/tablea1?GETtext/xml+votable180.050000true33.646-5.251670.0055555555555555565/4419 4421-4423 4425 4428 6/17503 17525 17671 17674-17675 17681-17683 17696-17697 17699 17705 17708 17716-17717https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/654/A93?format=asciidefaultJ/A+A/654/A93/tablea1Properties derived for each of the 1212 sources with good XCIGALE fitsSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintobjIDSDSS objID from SDSS-DR8meta.id;meta.mainzSpectroscopic redshift from Menzel et al., 2016MNRAS.457..110M, Cat. J/MNRAS/457/110src.redshiftdoublePolDustPolar dust prescription when it is available (1)meta.notecharTpd? Polar dust temperature for sources with polar dust and a determined extinction curveKphys.temperaturefloatnullablee_Tpd? Polar dust temperature errorKstat.errorfloatnullableAV? V band attenuation due to polar dust for sources with polar dust and a determined extinction curvemagphys.absorptionfloatnullablee_AV? V band attenuation errormagstat.errorfloatnullableSFR? Star formation rate (2)solMass/yrphys.SFRfloatnullablee_SFR? Star formation rate errorsolMass/yrstat.error;phys.SFRfloatnullableM*? Stellar mass (2)solMassphys.massdoublenullablee_M*? Stellar mass errorsolMassstat.errordoublenullableSloanDisplay the SDSS data for this objectmeta.ref.urlchar_RAPositions from Menzel et al., Cat. J/MNRAS/457/110 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Menzel et al., Cat. J/MNRAS/457/110 (declination part)degpos.eq.dec;meta.main