J/A+A/692/A250ivo://CDS.VizieR/J/A+A/692/A250doi:10.26093/cds/vizier.36920250CDSAkylas A.Georgantopoulos I.Gandhi P.Boorman P.Greenwell C.L.2025-02-26T20:02:43Z2024-12-19T09:07:58ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleix-ray-sourcesinfrared-photometryredshiftedX-ray surveys provide the most efficient means for the detection of Active Galactic Nuclei (AGN). However, they face difficulties in detecting the most heavily obscured Compton-thick AGN. The BAT detector on board the Gehrels/Swift mission, operating in the very hard 14-195 keV band, has provided the largest samples of Compton-thick AGN in the local Universe. However, even these flux limited samples can miss the most obscured sources among the Compton-thick AGN population. A robust way to find these local sources is to systematically study volume-limited AGN samples detected in the IR or the optical part of the spectrum. Here, we utilize a local sample (<100Mpc) of mid-IR selected AGN, unbiased against obscuration, to determine the fraction of Compton-thick sources in the local universe. When available we acquire X-ray spectral information for the sources in our sample from previously published studies. Additionally, to maximize the X-ray spectral information for the sources in our sample, we analyse, for the first time, eleven unexplored XMM-Newton and NuSTAR observations, identifying four new Compton-thick sources. Our results reveal an increased fraction of Compton-thick AGN among the sources that have not been detected by BAT of 44%. Overall we estimate a fraction of Compton thick sources in the local universe of 25-30% among mid-IR selected AGN. We find no evidence for evolution of the AGN Compton-thick fraction with luminosity2024A&A...692A.250Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/692/A250CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/494/1784 : Local AGN survey (LASr) I (Asmus+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/692/A250https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/692/A250http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/692/A250https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/692/A250https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/692/A250http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/692/A250GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/692/A250/table1 (Log of our sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/692/A250/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/692/A250/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/692/A250/table1?GETtext/xml+votable180.050000true6.38768.36230.0055555555555555566/995 1008 1701 2229 2564 3762 4381 4439 4654 4993 6241 6270 6293 6376 7132 7157 7642 7869 7921 8740 8921-8922 10364 10927 13021 14526 14653 15481 15606 17392 17525 17529 17754 17850 18387 19130 19283 19797 20000 21450 21996 22638 22915 23171 24120 24170 24228 24750 24896 25610 25907 26121 26148 27191 27582 27767 28517 29906 31430 33034 33558 34294 34531 34534 34695 34913 35447 35623 36158 36618 36765 36775 36861 37020 38268 38314 38653 38704 39813 40670 40736 40818 41229 41423 41586 41679 41929 41982 42012 42016 42027 42704 43634 43677 43748 43806 43825 43877 43925 44219 44722 44896 45735 45754 45779 45883 45997 46013 46399 46987 47120 47245 47713https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/692/A250?format=asciiX-rayInfrareddefaultJ/A+A/692/A250/table1Log of our samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name from Asmus et al. (2020MNRAS.494.1784A, Cat. J/MNRAS/494/1784)meta.id;meta.maincharn_Name[*s] Note (1)meta.notecharClassOptical classification from SIMBAD or NEDsrc.classcharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainzRedshiftsrc.redshiftfloatlogLW3? Logarithm of W3 (12um) continuum (2)log(1e-07W)phys.luminosity;em.IR.8-15umfloatnullableSimbadNameSimbad column added by the CDSmeta.idcharnullablelogLnucLogarithm of the nuclear 12um luminosity of the AGN (2)log(1e-07W)phys.luminosity;em.IR.8-15umfloatlogLX? logarithm of the intrinsic 2-10keVlog(1e-07W)phys.luminosity;em.X-rayfloatnullablel_logNHlosLimit flag on logNHmeta.code.errorcharlogNHlos? Logarithm of the column density along the line of sightlog(cm**-2)phys.columnDensityfloatnullabler_logNHlosReference for the column density (3)meta.ref;pos.framechar